Alright, let's solve this math problem step by step. First, we have the number 204. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 399. So, we're going to take the number 204 and add it to itself 399 times.
Step 1: 0 + 204 = 204
Step 2: 204 + 204 = 408
Step 3: 408 + 204 = 612
Step 4: 612 + 204 = 816
Step 5: 816 + 204 = 1020
Step 6: 1020 + 204 = 1224
Step 7: 1224 + 204 = 1428
Step 8: 1428 + 204 = 1632
Step 9: 1632 + 204 = 1836
Step 10: 1836 + 204 = 2040
Step 11: 2040 + 204 = 2244
Step 12: 2244 + 204 = 2448
Step 13: 2448 + 204 = 2652
Step 14: 2652 + 204 = 2856
Step 15: 2856 + 204 = 3060
Step 16: 3060 + 204 = 3264
Step 17: 3264 + 204 = 3468
Step 18: 3468 + 204 = 3672
Step 19: 3672 + 204 = 3876
Step 20: 3876 + 204 = 4080
Step 21: 4080 + 204 = 4284
Step 22: 4284 + 204 = 4488
Step 23: 4488 + 204 = 4692
Step 24: 4692 + 204 = 4896
Step 25: 4896 + 204 = 5100
Step 26: 5100 + 204 = 5304
Step 27: 5304 + 204 = 5508
Step 28: 5508 + 204 = 5712
Step 29: 5712 + 204 = 5916
Step 30: 5916 + 204 = 6120
Step 31: 6120 + 204 = 6324
Step 32: 6324 + 204 = 6528
Step 33: 6528 + 204 = 6732
Step 34: 6732 + 204 = 6936
Step 35: 6936 + 204 = 7140
Step 36: 7140 + 204 = 7344
Step 37: 7344 + 204 = 7548
Step 38: 7548 + 204 = 7752
Step 39: 7752 + 204 = 7956
Step 40: 7956 + 204 = 8160
Step 41: 8160 + 204 = 8364
Step 42: 8364 + 204 = 8568
Step 43: 8568 + 204 = 8772
Step 44: 8772 + 204 = 8976
Step 45: 8976 + 204 = 9180
Step 46: 9180 + 204 = 9384
Step 47: 9384 + 204 = 9588
Step 48: 9588 + 204 = 9792
Step 49: 9792 + 204 = 9996
Step 50: 9996 + 204 = 10200
Step 51: 10200 + 204 = 10404
Step 52: 10404 + 204 = 10608
Step 53: 10608 + 204 = 10812
Step 54: 10812 + 204 = 11016
Step 55: 11016 + 204 = 11220
Step 56: 11220 + 204 = 11424
Step 57: 11424 + 204 = 11628
Step 58: 11628 + 204 = 11832
Step 59: 11832 + 204 = 12036
Step 60: 12036 + 204 = 12240
Step 61: 12240 + 204 = 12444
Step 62: 12444 + 204 = 12648
Step 63: 12648 + 204 = 12852
Step 64: 12852 + 204 = 13056
Step 65: 13056 + 204 = 13260
Step 66: 13260 + 204 = 13464
Step 67: 13464 + 204 = 13668
Step 68: 13668 + 204 = 13872
Step 69: 13872 + 204 = 14076
Step 70: 14076 + 204 = 14280
Step 71: 14280 + 204 = 14484
Step 72: 14484 + 204 = 14688
Step 73: 14688 + 204 = 14892
Step 74: 14892 + 204 = 15096
Step 75: 15096 + 204 = 15300
Step 76: 15300 + 204 = 15504
Step 77: 15504 + 204 = 15708
Step 78: 15708 + 204 = 15912
Step 79: 15912 + 204 = 16116
Step 80: 16116 + 204 = 16320
Step 81: 16320 + 204 = 16524
Step 82: 16524 + 204 = 16728
Step 83: 16728 + 204 = 16932
Step 84: 16932 + 204 = 17136
Step 85: 17136 + 204 = 17340
Step 86: 17340 + 204 = 17544
Step 87: 17544 + 204 = 17748
Step 88: 17748 + 204 = 17952
Step 89: 17952 + 204 = 18156
Step 90: 18156 + 204 = 18360
Step 91: 18360 + 204 = 18564
Step 92: 18564 + 204 = 18768
Step 93: 18768 + 204 = 18972
Step 94: 18972 + 204 = 19176
Step 95: 19176 + 204 = 19380
Step 96: 19380 + 204 = 19584
Step 97: 19584 + 204 = 19788
Step 98: 19788 + 204 = 19992
Step 99: 19992 + 204 = 20196
Step 100: 20196 + 204 = 20400
Step 101: 20400 + 204 = 20604
Step 102: 20604 + 204 = 20808
Step 103: 20808 + 204 = 21012
Step 104: 21012 + 204 = 21216
Step 105: 21216 + 204 = 21420
Step 106: 21420 + 204 = 21624
Step 107: 21624 + 204 = 21828
Step 108: 21828 + 204 = 22032
Step 109: 22032 + 204 = 22236
Step 110: 22236 + 204 = 22440
Step 111: 22440 + 204 = 22644
Step 112: 22644 + 204 = 22848
Step 113: 22848 + 204 = 23052
Step 114: 23052 + 204 = 23256
Step 115: 23256 + 204 = 23460
Step 116: 23460 + 204 = 23664
Step 117: 23664 + 204 = 23868
Step 118: 23868 + 204 = 24072
Step 119: 24072 + 204 = 24276
Step 120: 24276 + 204 = 24480
Step 121: 24480 + 204 = 24684
Step 122: 24684 + 204 = 24888
Step 123: 24888 + 204 = 25092
Step 124: 25092 + 204 = 25296
Step 125: 25296 + 204 = 25500
Step 126: 25500 + 204 = 25704
Step 127: 25704 + 204 = 25908
Step 128: 25908 + 204 = 26112
Step 129: 26112 + 204 = 26316
Step 130: 26316 + 204 = 26520
Step 131: 26520 + 204 = 26724
Step 132: 26724 + 204 = 26928
Step 133: 26928 + 204 = 27132
Step 134: 27132 + 204 = 27336
Step 135: 27336 + 204 = 27540
Step 136: 27540 + 204 = 27744
Step 137: 27744 + 204 = 27948
Step 138: 27948 + 204 = 28152
Step 139: 28152 + 204 = 28356
Step 140: 28356 + 204 = 28560
Step 141: 28560 + 204 = 28764
Step 142: 28764 + 204 = 28968
Step 143: 28968 + 204 = 29172
Step 144: 29172 + 204 = 29376
Step 145: 29376 + 204 = 29580
Step 146: 29580 + 204 = 29784
Step 147: 29784 + 204 = 29988
Step 148: 29988 + 204 = 30192
Step 149: 30192 + 204 = 30396
Step 150: 30396 + 204 = 30600
Step 151: 30600 + 204 = 30804
Step 152: 30804 + 204 = 31008
Step 153: 31008 + 204 = 31212
Step 154: 31212 + 204 = 31416
Step 155: 31416 + 204 = 31620
Step 156: 31620 + 204 = 31824
Step 157: 31824 + 204 = 32028
Step 158: 32028 + 204 = 32232
Step 159: 32232 + 204 = 32436
Step 160: 32436 + 204 = 32640
Step 161: 32640 + 204 = 32844
Step 162: 32844 + 204 = 33048
Step 163: 33048 + 204 = 33252
Step 164: 33252 + 204 = 33456
Step 165: 33456 + 204 = 33660
Step 166: 33660 + 204 = 33864
Step 167: 33864 + 204 = 34068
Step 168: 34068 + 204 = 34272
Step 169: 34272 + 204 = 34476
Step 170: 34476 + 204 = 34680
Step 171: 34680 + 204 = 34884
Step 172: 34884 + 204 = 35088
Step 173: 35088 + 204 = 35292
Step 174: 35292 + 204 = 35496
Step 175: 35496 + 204 = 35700
Step 176: 35700 + 204 = 35904
Step 177: 35904 + 204 = 36108
Step 178: 36108 + 204 = 36312
Step 179: 36312 + 204 = 36516
Step 180: 36516 + 204 = 36720
Step 181: 36720 + 204 = 36924
Step 182: 36924 + 204 = 37128
Step 183: 37128 + 204 = 37332
Step 184: 37332 + 204 = 37536
Step 185: 37536 + 204 = 37740
Step 186: 37740 + 204 = 37944
Step 187: 37944 + 204 = 38148
Step 188: 38148 + 204 = 38352
Step 189: 38352 + 204 = 38556
Step 190: 38556 + 204 = 38760
Step 191: 38760 + 204 = 38964
Step 192: 38964 + 204 = 39168
Step 193: 39168 + 204 = 39372
Step 194: 39372 + 204 = 39576
Step 195: 39576 + 204 = 39780
Step 196: 39780 + 204 = 39984
Step 197: 39984 + 204 = 40188
Step 198: 40188 + 204 = 40392
Step 199: 40392 + 204 = 40596
Step 200: 40596 + 204 = 40800
Step 201: 40800 + 204 = 41004
Step 202: 41004 + 204 = 41208
Step 203: 41208 + 204 = 41412
Step 204: 41412 + 204 = 41616
Step 205: 41616 + 204 = 41820
Step 206: 41820 + 204 = 42024
Step 207: 42024 + 204 = 42228
Step 208: 42228 + 204 = 42432
Step 209: 42432 + 204 = 42636
Step 210: 42636 + 204 = 42840
Step 211: 42840 + 204 = 43044
Step 212: 43044 + 204 = 43248
Step 213: 43248 + 204 = 43452
Step 214: 43452 + 204 = 43656
Step 215: 43656 + 204 = 43860
Step 216: 43860 + 204 = 44064
Step 217: 44064 + 204 = 44268
Step 218: 44268 + 204 = 44472
Step 219: 44472 + 204 = 44676
Step 220: 44676 + 204 = 44880
Step 221: 44880 + 204 = 45084
Step 222: 45084 + 204 = 45288
Step 223: 45288 + 204 = 45492
Step 224: 45492 + 204 = 45696
Step 225: 45696 + 204 = 45900
Step 226: 45900 + 204 = 46104
Step 227: 46104 + 204 = 46308
Step 228: 46308 + 204 = 46512
Step 229: 46512 + 204 = 46716
Step 230: 46716 + 204 = 46920
Step 231: 46920 + 204 = 47124
Step 232: 47124 + 204 = 47328
Step 233: 47328 + 204 = 47532
Step 234: 47532 + 204 = 47736
Step 235: 47736 + 204 = 47940
Step 236: 47940 + 204 = 48144
Step 237: 48144 + 204 = 48348
Step 238: 48348 + 204 = 48552
Step 239: 48552 + 204 = 48756
Step 240: 48756 + 204 = 48960
Step 241: 48960 + 204 = 49164
Step 242: 49164 + 204 = 49368
Step 243: 49368 + 204 = 49572
Step 244: 49572 + 204 = 49776
Step 245: 49776 + 204 = 49980
Step 246: 49980 + 204 = 50184
Step 247: 50184 + 204 = 50388
Step 248: 50388 + 204 = 50592
Step 249: 50592 + 204 = 50796
Step 250: 50796 + 204 = 51000
Step 251: 51000 + 204 = 51204
Step 252: 51204 + 204 = 51408
Step 253: 51408 + 204 = 51612
Step 254: 51612 + 204 = 51816
Step 255: 51816 + 204 = 52020
Step 256: 52020 + 204 = 52224
Step 257: 52224 + 204 = 52428
Step 258: 52428 + 204 = 52632
Step 259: 52632 + 204 = 52836
Step 260: 52836 + 204 = 53040
Step 261: 53040 + 204 = 53244
Step 262: 53244 + 204 = 53448
Step 263: 53448 + 204 = 53652
Step 264: 53652 + 204 = 53856
Step 265: 53856 + 204 = 54060
Step 266: 54060 + 204 = 54264
Step 267: 54264 + 204 = 54468
Step 268: 54468 + 204 = 54672
Step 269: 54672 + 204 = 54876
Step 270: 54876 + 204 = 55080
Step 271: 55080 + 204 = 55284
Step 272: 55284 + 204 = 55488
Step 273: 55488 + 204 = 55692
Step 274: 55692 + 204 = 55896
Step 275: 55896 + 204 = 56100
Step 276: 56100 + 204 = 56304
Step 277: 56304 + 204 = 56508
Step 278: 56508 + 204 = 56712
Step 279: 56712 + 204 = 56916
Step 280: 56916 + 204 = 57120
Step 281: 57120 + 204 = 57324
Step 282: 57324 + 204 = 57528
Step 283: 57528 + 204 = 57732
Step 284: 57732 + 204 = 57936
Step 285: 57936 + 204 = 58140
Step 286: 58140 + 204 = 58344
Step 287: 58344 + 204 = 58548
Step 288: 58548 + 204 = 58752
Step 289: 58752 + 204 = 58956
Step 290: 58956 + 204 = 59160
Step 291: 59160 + 204 = 59364
Step 292: 59364 + 204 = 59568
Step 293: 59568 + 204 = 59772
Step 294: 59772 + 204 = 59976
Step 295: 59976 + 204 = 60180
Step 296: 60180 + 204 = 60384
Step 297: 60384 + 204 = 60588
Step 298: 60588 + 204 = 60792
Step 299: 60792 + 204 = 60996
Step 300: 60996 + 204 = 61200
Step 301: 61200 + 204 = 61404
Step 302: 61404 + 204 = 61608
Step 303: 61608 + 204 = 61812
Step 304: 61812 + 204 = 62016
Step 305: 62016 + 204 = 62220
Step 306: 62220 + 204 = 62424
Step 307: 62424 + 204 = 62628
Step 308: 62628 + 204 = 62832
Step 309: 62832 + 204 = 63036
Step 310: 63036 + 204 = 63240
Step 311: 63240 + 204 = 63444
Step 312: 63444 + 204 = 63648
Step 313: 63648 + 204 = 63852
Step 314: 63852 + 204 = 64056
Step 315: 64056 + 204 = 64260
Step 316: 64260 + 204 = 64464
Step 317: 64464 + 204 = 64668
Step 318: 64668 + 204 = 64872
Step 319: 64872 + 204 = 65076
Step 320: 65076 + 204 = 65280
Step 321: 65280 + 204 = 65484
Step 322: 65484 + 204 = 65688
Step 323: 65688 + 204 = 65892
Step 324: 65892 + 204 = 66096
Step 325: 66096 + 204 = 66300
Step 326: 66300 + 204 = 66504
Step 327: 66504 + 204 = 66708
Step 328: 66708 + 204 = 66912
Step 329: 66912 + 204 = 67116
Step 330: 67116 + 204 = 67320
Step 331: 67320 + 204 = 67524
Step 332: 67524 + 204 = 67728
Step 333: 67728 + 204 = 67932
Step 334: 67932 + 204 = 68136
Step 335: 68136 + 204 = 68340
Step 336: 68340 + 204 = 68544
Step 337: 68544 + 204 = 68748
Step 338: 68748 + 204 = 68952
Step 339: 68952 + 204 = 69156
Step 340: 69156 + 204 = 69360
Step 341: 69360 + 204 = 69564
Step 342: 69564 + 204 = 69768
Step 343: 69768 + 204 = 69972
Step 344: 69972 + 204 = 70176
Step 345: 70176 + 204 = 70380
Step 346: 70380 + 204 = 70584
Step 347: 70584 + 204 = 70788
Step 348: 70788 + 204 = 70992
Step 349: 70992 + 204 = 71196
Step 350: 71196 + 204 = 71400
Step 351: 71400 + 204 = 71604
Step 352: 71604 + 204 = 71808
Step 353: 71808 + 204 = 72012
Step 354: 72012 + 204 = 72216
Step 355: 72216 + 204 = 72420
Step 356: 72420 + 204 = 72624
Step 357: 72624 + 204 = 72828
Step 358: 72828 + 204 = 73032
Step 359: 73032 + 204 = 73236
Step 360: 73236 + 204 = 73440
Step 361: 73440 + 204 = 73644
Step 362: 73644 + 204 = 73848
Step 363: 73848 + 204 = 74052
Step 364: 74052 + 204 = 74256
Step 365: 74256 + 204 = 74460
Step 366: 74460 + 204 = 74664
Step 367: 74664 + 204 = 74868
Step 368: 74868 + 204 = 75072
Step 369: 75072 + 204 = 75276
Step 370: 75276 + 204 = 75480
Step 371: 75480 + 204 = 75684
Step 372: 75684 + 204 = 75888
Step 373: 75888 + 204 = 76092
Step 374: 76092 + 204 = 76296
Step 375: 76296 + 204 = 76500
Step 376: 76500 + 204 = 76704
Step 377: 76704 + 204 = 76908
Step 378: 76908 + 204 = 77112
Step 379: 77112 + 204 = 77316
Step 380: 77316 + 204 = 77520
Step 381: 77520 + 204 = 77724
Step 382: 77724 + 204 = 77928
Step 383: 77928 + 204 = 78132
Step 384: 78132 + 204 = 78336
Step 385: 78336 + 204 = 78540
Step 386: 78540 + 204 = 78744
Step 387: 78744 + 204 = 78948
Step 388: 78948 + 204 = 79152
Step 389: 79152 + 204 = 79356
Step 390: 79356 + 204 = 79560
Step 391: 79560 + 204 = 79764
Step 392: 79764 + 204 = 79968
Step 393: 79968 + 204 = 80172
Step 394: 80172 + 204 = 80376
Step 395: 80376 + 204 = 80580
Step 396: 80580 + 204 = 80784
Step 397: 80784 + 204 = 80988
Step 398: 80988 + 204 = 81192
Step 399: 81192 + 204 = 81396

So, 204*399 = 81396