Alright, let's solve this math problem step by step. First, we have the number 312. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 489. So, we're going to take the number 312 and add it to itself 489 times.
Step 1: 0 + 312 = 312
Step 2: 312 + 312 = 624
Step 3: 624 + 312 = 936
Step 4: 936 + 312 = 1248
Step 5: 1248 + 312 = 1560
Step 6: 1560 + 312 = 1872
Step 7: 1872 + 312 = 2184
Step 8: 2184 + 312 = 2496
Step 9: 2496 + 312 = 2808
Step 10: 2808 + 312 = 3120
Step 11: 3120 + 312 = 3432
Step 12: 3432 + 312 = 3744
Step 13: 3744 + 312 = 4056
Step 14: 4056 + 312 = 4368
Step 15: 4368 + 312 = 4680
Step 16: 4680 + 312 = 4992
Step 17: 4992 + 312 = 5304
Step 18: 5304 + 312 = 5616
Step 19: 5616 + 312 = 5928
Step 20: 5928 + 312 = 6240
Step 21: 6240 + 312 = 6552
Step 22: 6552 + 312 = 6864
Step 23: 6864 + 312 = 7176
Step 24: 7176 + 312 = 7488
Step 25: 7488 + 312 = 7800
Step 26: 7800 + 312 = 8112
Step 27: 8112 + 312 = 8424
Step 28: 8424 + 312 = 8736
Step 29: 8736 + 312 = 9048
Step 30: 9048 + 312 = 9360
Step 31: 9360 + 312 = 9672
Step 32: 9672 + 312 = 9984
Step 33: 9984 + 312 = 10296
Step 34: 10296 + 312 = 10608
Step 35: 10608 + 312 = 10920
Step 36: 10920 + 312 = 11232
Step 37: 11232 + 312 = 11544
Step 38: 11544 + 312 = 11856
Step 39: 11856 + 312 = 12168
Step 40: 12168 + 312 = 12480
Step 41: 12480 + 312 = 12792
Step 42: 12792 + 312 = 13104
Step 43: 13104 + 312 = 13416
Step 44: 13416 + 312 = 13728
Step 45: 13728 + 312 = 14040
Step 46: 14040 + 312 = 14352
Step 47: 14352 + 312 = 14664
Step 48: 14664 + 312 = 14976
Step 49: 14976 + 312 = 15288
Step 50: 15288 + 312 = 15600
Step 51: 15600 + 312 = 15912
Step 52: 15912 + 312 = 16224
Step 53: 16224 + 312 = 16536
Step 54: 16536 + 312 = 16848
Step 55: 16848 + 312 = 17160
Step 56: 17160 + 312 = 17472
Step 57: 17472 + 312 = 17784
Step 58: 17784 + 312 = 18096
Step 59: 18096 + 312 = 18408
Step 60: 18408 + 312 = 18720
Step 61: 18720 + 312 = 19032
Step 62: 19032 + 312 = 19344
Step 63: 19344 + 312 = 19656
Step 64: 19656 + 312 = 19968
Step 65: 19968 + 312 = 20280
Step 66: 20280 + 312 = 20592
Step 67: 20592 + 312 = 20904
Step 68: 20904 + 312 = 21216
Step 69: 21216 + 312 = 21528
Step 70: 21528 + 312 = 21840
Step 71: 21840 + 312 = 22152
Step 72: 22152 + 312 = 22464
Step 73: 22464 + 312 = 22776
Step 74: 22776 + 312 = 23088
Step 75: 23088 + 312 = 23400
Step 76: 23400 + 312 = 23712
Step 77: 23712 + 312 = 24024
Step 78: 24024 + 312 = 24336
Step 79: 24336 + 312 = 24648
Step 80: 24648 + 312 = 24960
Step 81: 24960 + 312 = 25272
Step 82: 25272 + 312 = 25584
Step 83: 25584 + 312 = 25896
Step 84: 25896 + 312 = 26208
Step 85: 26208 + 312 = 26520
Step 86: 26520 + 312 = 26832
Step 87: 26832 + 312 = 27144
Step 88: 27144 + 312 = 27456
Step 89: 27456 + 312 = 27768
Step 90: 27768 + 312 = 28080
Step 91: 28080 + 312 = 28392
Step 92: 28392 + 312 = 28704
Step 93: 28704 + 312 = 29016
Step 94: 29016 + 312 = 29328
Step 95: 29328 + 312 = 29640
Step 96: 29640 + 312 = 29952
Step 97: 29952 + 312 = 30264
Step 98: 30264 + 312 = 30576
Step 99: 30576 + 312 = 30888
Step 100: 30888 + 312 = 31200
Step 101: 31200 + 312 = 31512
Step 102: 31512 + 312 = 31824
Step 103: 31824 + 312 = 32136
Step 104: 32136 + 312 = 32448
Step 105: 32448 + 312 = 32760
Step 106: 32760 + 312 = 33072
Step 107: 33072 + 312 = 33384
Step 108: 33384 + 312 = 33696
Step 109: 33696 + 312 = 34008
Step 110: 34008 + 312 = 34320
Step 111: 34320 + 312 = 34632
Step 112: 34632 + 312 = 34944
Step 113: 34944 + 312 = 35256
Step 114: 35256 + 312 = 35568
Step 115: 35568 + 312 = 35880
Step 116: 35880 + 312 = 36192
Step 117: 36192 + 312 = 36504
Step 118: 36504 + 312 = 36816
Step 119: 36816 + 312 = 37128
Step 120: 37128 + 312 = 37440
Step 121: 37440 + 312 = 37752
Step 122: 37752 + 312 = 38064
Step 123: 38064 + 312 = 38376
Step 124: 38376 + 312 = 38688
Step 125: 38688 + 312 = 39000
Step 126: 39000 + 312 = 39312
Step 127: 39312 + 312 = 39624
Step 128: 39624 + 312 = 39936
Step 129: 39936 + 312 = 40248
Step 130: 40248 + 312 = 40560
Step 131: 40560 + 312 = 40872
Step 132: 40872 + 312 = 41184
Step 133: 41184 + 312 = 41496
Step 134: 41496 + 312 = 41808
Step 135: 41808 + 312 = 42120
Step 136: 42120 + 312 = 42432
Step 137: 42432 + 312 = 42744
Step 138: 42744 + 312 = 43056
Step 139: 43056 + 312 = 43368
Step 140: 43368 + 312 = 43680
Step 141: 43680 + 312 = 43992
Step 142: 43992 + 312 = 44304
Step 143: 44304 + 312 = 44616
Step 144: 44616 + 312 = 44928
Step 145: 44928 + 312 = 45240
Step 146: 45240 + 312 = 45552
Step 147: 45552 + 312 = 45864
Step 148: 45864 + 312 = 46176
Step 149: 46176 + 312 = 46488
Step 150: 46488 + 312 = 46800
Step 151: 46800 + 312 = 47112
Step 152: 47112 + 312 = 47424
Step 153: 47424 + 312 = 47736
Step 154: 47736 + 312 = 48048
Step 155: 48048 + 312 = 48360
Step 156: 48360 + 312 = 48672
Step 157: 48672 + 312 = 48984
Step 158: 48984 + 312 = 49296
Step 159: 49296 + 312 = 49608
Step 160: 49608 + 312 = 49920
Step 161: 49920 + 312 = 50232
Step 162: 50232 + 312 = 50544
Step 163: 50544 + 312 = 50856
Step 164: 50856 + 312 = 51168
Step 165: 51168 + 312 = 51480
Step 166: 51480 + 312 = 51792
Step 167: 51792 + 312 = 52104
Step 168: 52104 + 312 = 52416
Step 169: 52416 + 312 = 52728
Step 170: 52728 + 312 = 53040
Step 171: 53040 + 312 = 53352
Step 172: 53352 + 312 = 53664
Step 173: 53664 + 312 = 53976
Step 174: 53976 + 312 = 54288
Step 175: 54288 + 312 = 54600
Step 176: 54600 + 312 = 54912
Step 177: 54912 + 312 = 55224
Step 178: 55224 + 312 = 55536
Step 179: 55536 + 312 = 55848
Step 180: 55848 + 312 = 56160
Step 181: 56160 + 312 = 56472
Step 182: 56472 + 312 = 56784
Step 183: 56784 + 312 = 57096
Step 184: 57096 + 312 = 57408
Step 185: 57408 + 312 = 57720
Step 186: 57720 + 312 = 58032
Step 187: 58032 + 312 = 58344
Step 188: 58344 + 312 = 58656
Step 189: 58656 + 312 = 58968
Step 190: 58968 + 312 = 59280
Step 191: 59280 + 312 = 59592
Step 192: 59592 + 312 = 59904
Step 193: 59904 + 312 = 60216
Step 194: 60216 + 312 = 60528
Step 195: 60528 + 312 = 60840
Step 196: 60840 + 312 = 61152
Step 197: 61152 + 312 = 61464
Step 198: 61464 + 312 = 61776
Step 199: 61776 + 312 = 62088
Step 200: 62088 + 312 = 62400
Step 201: 62400 + 312 = 62712
Step 202: 62712 + 312 = 63024
Step 203: 63024 + 312 = 63336
Step 204: 63336 + 312 = 63648
Step 205: 63648 + 312 = 63960
Step 206: 63960 + 312 = 64272
Step 207: 64272 + 312 = 64584
Step 208: 64584 + 312 = 64896
Step 209: 64896 + 312 = 65208
Step 210: 65208 + 312 = 65520
Step 211: 65520 + 312 = 65832
Step 212: 65832 + 312 = 66144
Step 213: 66144 + 312 = 66456
Step 214: 66456 + 312 = 66768
Step 215: 66768 + 312 = 67080
Step 216: 67080 + 312 = 67392
Step 217: 67392 + 312 = 67704
Step 218: 67704 + 312 = 68016
Step 219: 68016 + 312 = 68328
Step 220: 68328 + 312 = 68640
Step 221: 68640 + 312 = 68952
Step 222: 68952 + 312 = 69264
Step 223: 69264 + 312 = 69576
Step 224: 69576 + 312 = 69888
Step 225: 69888 + 312 = 70200
Step 226: 70200 + 312 = 70512
Step 227: 70512 + 312 = 70824
Step 228: 70824 + 312 = 71136
Step 229: 71136 + 312 = 71448
Step 230: 71448 + 312 = 71760
Step 231: 71760 + 312 = 72072
Step 232: 72072 + 312 = 72384
Step 233: 72384 + 312 = 72696
Step 234: 72696 + 312 = 73008
Step 235: 73008 + 312 = 73320
Step 236: 73320 + 312 = 73632
Step 237: 73632 + 312 = 73944
Step 238: 73944 + 312 = 74256
Step 239: 74256 + 312 = 74568
Step 240: 74568 + 312 = 74880
Step 241: 74880 + 312 = 75192
Step 242: 75192 + 312 = 75504
Step 243: 75504 + 312 = 75816
Step 244: 75816 + 312 = 76128
Step 245: 76128 + 312 = 76440
Step 246: 76440 + 312 = 76752
Step 247: 76752 + 312 = 77064
Step 248: 77064 + 312 = 77376
Step 249: 77376 + 312 = 77688
Step 250: 77688 + 312 = 78000
Step 251: 78000 + 312 = 78312
Step 252: 78312 + 312 = 78624
Step 253: 78624 + 312 = 78936
Step 254: 78936 + 312 = 79248
Step 255: 79248 + 312 = 79560
Step 256: 79560 + 312 = 79872
Step 257: 79872 + 312 = 80184
Step 258: 80184 + 312 = 80496
Step 259: 80496 + 312 = 80808
Step 260: 80808 + 312 = 81120
Step 261: 81120 + 312 = 81432
Step 262: 81432 + 312 = 81744
Step 263: 81744 + 312 = 82056
Step 264: 82056 + 312 = 82368
Step 265: 82368 + 312 = 82680
Step 266: 82680 + 312 = 82992
Step 267: 82992 + 312 = 83304
Step 268: 83304 + 312 = 83616
Step 269: 83616 + 312 = 83928
Step 270: 83928 + 312 = 84240
Step 271: 84240 + 312 = 84552
Step 272: 84552 + 312 = 84864
Step 273: 84864 + 312 = 85176
Step 274: 85176 + 312 = 85488
Step 275: 85488 + 312 = 85800
Step 276: 85800 + 312 = 86112
Step 277: 86112 + 312 = 86424
Step 278: 86424 + 312 = 86736
Step 279: 86736 + 312 = 87048
Step 280: 87048 + 312 = 87360
Step 281: 87360 + 312 = 87672
Step 282: 87672 + 312 = 87984
Step 283: 87984 + 312 = 88296
Step 284: 88296 + 312 = 88608
Step 285: 88608 + 312 = 88920
Step 286: 88920 + 312 = 89232
Step 287: 89232 + 312 = 89544
Step 288: 89544 + 312 = 89856
Step 289: 89856 + 312 = 90168
Step 290: 90168 + 312 = 90480
Step 291: 90480 + 312 = 90792
Step 292: 90792 + 312 = 91104
Step 293: 91104 + 312 = 91416
Step 294: 91416 + 312 = 91728
Step 295: 91728 + 312 = 92040
Step 296: 92040 + 312 = 92352
Step 297: 92352 + 312 = 92664
Step 298: 92664 + 312 = 92976
Step 299: 92976 + 312 = 93288
Step 300: 93288 + 312 = 93600
Step 301: 93600 + 312 = 93912
Step 302: 93912 + 312 = 94224
Step 303: 94224 + 312 = 94536
Step 304: 94536 + 312 = 94848
Step 305: 94848 + 312 = 95160
Step 306: 95160 + 312 = 95472
Step 307: 95472 + 312 = 95784
Step 308: 95784 + 312 = 96096
Step 309: 96096 + 312 = 96408
Step 310: 96408 + 312 = 96720
Step 311: 96720 + 312 = 97032
Step 312: 97032 + 312 = 97344
Step 313: 97344 + 312 = 97656
Step 314: 97656 + 312 = 97968
Step 315: 97968 + 312 = 98280
Step 316: 98280 + 312 = 98592
Step 317: 98592 + 312 = 98904
Step 318: 98904 + 312 = 99216
Step 319: 99216 + 312 = 99528
Step 320: 99528 + 312 = 99840
Step 321: 99840 + 312 = 100152
Step 322: 100152 + 312 = 100464
Step 323: 100464 + 312 = 100776
Step 324: 100776 + 312 = 101088
Step 325: 101088 + 312 = 101400
Step 326: 101400 + 312 = 101712
Step 327: 101712 + 312 = 102024
Step 328: 102024 + 312 = 102336
Step 329: 102336 + 312 = 102648
Step 330: 102648 + 312 = 102960
Step 331: 102960 + 312 = 103272
Step 332: 103272 + 312 = 103584
Step 333: 103584 + 312 = 103896
Step 334: 103896 + 312 = 104208
Step 335: 104208 + 312 = 104520
Step 336: 104520 + 312 = 104832
Step 337: 104832 + 312 = 105144
Step 338: 105144 + 312 = 105456
Step 339: 105456 + 312 = 105768
Step 340: 105768 + 312 = 106080
Step 341: 106080 + 312 = 106392
Step 342: 106392 + 312 = 106704
Step 343: 106704 + 312 = 107016
Step 344: 107016 + 312 = 107328
Step 345: 107328 + 312 = 107640
Step 346: 107640 + 312 = 107952
Step 347: 107952 + 312 = 108264
Step 348: 108264 + 312 = 108576
Step 349: 108576 + 312 = 108888
Step 350: 108888 + 312 = 109200
Step 351: 109200 + 312 = 109512
Step 352: 109512 + 312 = 109824
Step 353: 109824 + 312 = 110136
Step 354: 110136 + 312 = 110448
Step 355: 110448 + 312 = 110760
Step 356: 110760 + 312 = 111072
Step 357: 111072 + 312 = 111384
Step 358: 111384 + 312 = 111696
Step 359: 111696 + 312 = 112008
Step 360: 112008 + 312 = 112320
Step 361: 112320 + 312 = 112632
Step 362: 112632 + 312 = 112944
Step 363: 112944 + 312 = 113256
Step 364: 113256 + 312 = 113568
Step 365: 113568 + 312 = 113880
Step 366: 113880 + 312 = 114192
Step 367: 114192 + 312 = 114504
Step 368: 114504 + 312 = 114816
Step 369: 114816 + 312 = 115128
Step 370: 115128 + 312 = 115440
Step 371: 115440 + 312 = 115752
Step 372: 115752 + 312 = 116064
Step 373: 116064 + 312 = 116376
Step 374: 116376 + 312 = 116688
Step 375: 116688 + 312 = 117000
Step 376: 117000 + 312 = 117312
Step 377: 117312 + 312 = 117624
Step 378: 117624 + 312 = 117936
Step 379: 117936 + 312 = 118248
Step 380: 118248 + 312 = 118560
Step 381: 118560 + 312 = 118872
Step 382: 118872 + 312 = 119184
Step 383: 119184 + 312 = 119496
Step 384: 119496 + 312 = 119808
Step 385: 119808 + 312 = 120120
Step 386: 120120 + 312 = 120432
Step 387: 120432 + 312 = 120744
Step 388: 120744 + 312 = 121056
Step 389: 121056 + 312 = 121368
Step 390: 121368 + 312 = 121680
Step 391: 121680 + 312 = 121992
Step 392: 121992 + 312 = 122304
Step 393: 122304 + 312 = 122616
Step 394: 122616 + 312 = 122928
Step 395: 122928 + 312 = 123240
Step 396: 123240 + 312 = 123552
Step 397: 123552 + 312 = 123864
Step 398: 123864 + 312 = 124176
Step 399: 124176 + 312 = 124488
Step 400: 124488 + 312 = 124800
Step 401: 124800 + 312 = 125112
Step 402: 125112 + 312 = 125424
Step 403: 125424 + 312 = 125736
Step 404: 125736 + 312 = 126048
Step 405: 126048 + 312 = 126360
Step 406: 126360 + 312 = 126672
Step 407: 126672 + 312 = 126984
Step 408: 126984 + 312 = 127296
Step 409: 127296 + 312 = 127608
Step 410: 127608 + 312 = 127920
Step 411: 127920 + 312 = 128232
Step 412: 128232 + 312 = 128544
Step 413: 128544 + 312 = 128856
Step 414: 128856 + 312 = 129168
Step 415: 129168 + 312 = 129480
Step 416: 129480 + 312 = 129792
Step 417: 129792 + 312 = 130104
Step 418: 130104 + 312 = 130416
Step 419: 130416 + 312 = 130728
Step 420: 130728 + 312 = 131040
Step 421: 131040 + 312 = 131352
Step 422: 131352 + 312 = 131664
Step 423: 131664 + 312 = 131976
Step 424: 131976 + 312 = 132288
Step 425: 132288 + 312 = 132600
Step 426: 132600 + 312 = 132912
Step 427: 132912 + 312 = 133224
Step 428: 133224 + 312 = 133536
Step 429: 133536 + 312 = 133848
Step 430: 133848 + 312 = 134160
Step 431: 134160 + 312 = 134472
Step 432: 134472 + 312 = 134784
Step 433: 134784 + 312 = 135096
Step 434: 135096 + 312 = 135408
Step 435: 135408 + 312 = 135720
Step 436: 135720 + 312 = 136032
Step 437: 136032 + 312 = 136344
Step 438: 136344 + 312 = 136656
Step 439: 136656 + 312 = 136968
Step 440: 136968 + 312 = 137280
Step 441: 137280 + 312 = 137592
Step 442: 137592 + 312 = 137904
Step 443: 137904 + 312 = 138216
Step 444: 138216 + 312 = 138528
Step 445: 138528 + 312 = 138840
Step 446: 138840 + 312 = 139152
Step 447: 139152 + 312 = 139464
Step 448: 139464 + 312 = 139776
Step 449: 139776 + 312 = 140088
Step 450: 140088 + 312 = 140400
Step 451: 140400 + 312 = 140712
Step 452: 140712 + 312 = 141024
Step 453: 141024 + 312 = 141336
Step 454: 141336 + 312 = 141648
Step 455: 141648 + 312 = 141960
Step 456: 141960 + 312 = 142272
Step 457: 142272 + 312 = 142584
Step 458: 142584 + 312 = 142896
Step 459: 142896 + 312 = 143208
Step 460: 143208 + 312 = 143520
Step 461: 143520 + 312 = 143832
Step 462: 143832 + 312 = 144144
Step 463: 144144 + 312 = 144456
Step 464: 144456 + 312 = 144768
Step 465: 144768 + 312 = 145080
Step 466: 145080 + 312 = 145392
Step 467: 145392 + 312 = 145704
Step 468: 145704 + 312 = 146016
Step 469: 146016 + 312 = 146328
Step 470: 146328 + 312 = 146640
Step 471: 146640 + 312 = 146952
Step 472: 146952 + 312 = 147264
Step 473: 147264 + 312 = 147576
Step 474: 147576 + 312 = 147888
Step 475: 147888 + 312 = 148200
Step 476: 148200 + 312 = 148512
Step 477: 148512 + 312 = 148824
Step 478: 148824 + 312 = 149136
Step 479: 149136 + 312 = 149448
Step 480: 149448 + 312 = 149760
Step 481: 149760 + 312 = 150072
Step 482: 150072 + 312 = 150384
Step 483: 150384 + 312 = 150696
Step 484: 150696 + 312 = 151008
Step 485: 151008 + 312 = 151320
Step 486: 151320 + 312 = 151632
Step 487: 151632 + 312 = 151944
Step 488: 151944 + 312 = 152256
Step 489: 152256 + 312 = 152568

So, 312*489 = 152568