Alright, let's solve this math problem step by step. First, we have the number 15. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 354. So, we're going to take the number 15 and add it to itself 354 times.
Step 1: 0 + 15 = 15
Step 2: 15 + 15 = 30
Step 3: 30 + 15 = 45
Step 4: 45 + 15 = 60
Step 5: 60 + 15 = 75
Step 6: 75 + 15 = 90
Step 7: 90 + 15 = 105
Step 8: 105 + 15 = 120
Step 9: 120 + 15 = 135
Step 10: 135 + 15 = 150
Step 11: 150 + 15 = 165
Step 12: 165 + 15 = 180
Step 13: 180 + 15 = 195
Step 14: 195 + 15 = 210
Step 15: 210 + 15 = 225
Step 16: 225 + 15 = 240
Step 17: 240 + 15 = 255
Step 18: 255 + 15 = 270
Step 19: 270 + 15 = 285
Step 20: 285 + 15 = 300
Step 21: 300 + 15 = 315
Step 22: 315 + 15 = 330
Step 23: 330 + 15 = 345
Step 24: 345 + 15 = 360
Step 25: 360 + 15 = 375
Step 26: 375 + 15 = 390
Step 27: 390 + 15 = 405
Step 28: 405 + 15 = 420
Step 29: 420 + 15 = 435
Step 30: 435 + 15 = 450
Step 31: 450 + 15 = 465
Step 32: 465 + 15 = 480
Step 33: 480 + 15 = 495
Step 34: 495 + 15 = 510
Step 35: 510 + 15 = 525
Step 36: 525 + 15 = 540
Step 37: 540 + 15 = 555
Step 38: 555 + 15 = 570
Step 39: 570 + 15 = 585
Step 40: 585 + 15 = 600
Step 41: 600 + 15 = 615
Step 42: 615 + 15 = 630
Step 43: 630 + 15 = 645
Step 44: 645 + 15 = 660
Step 45: 660 + 15 = 675
Step 46: 675 + 15 = 690
Step 47: 690 + 15 = 705
Step 48: 705 + 15 = 720
Step 49: 720 + 15 = 735
Step 50: 735 + 15 = 750
Step 51: 750 + 15 = 765
Step 52: 765 + 15 = 780
Step 53: 780 + 15 = 795
Step 54: 795 + 15 = 810
Step 55: 810 + 15 = 825
Step 56: 825 + 15 = 840
Step 57: 840 + 15 = 855
Step 58: 855 + 15 = 870
Step 59: 870 + 15 = 885
Step 60: 885 + 15 = 900
Step 61: 900 + 15 = 915
Step 62: 915 + 15 = 930
Step 63: 930 + 15 = 945
Step 64: 945 + 15 = 960
Step 65: 960 + 15 = 975
Step 66: 975 + 15 = 990
Step 67: 990 + 15 = 1005
Step 68: 1005 + 15 = 1020
Step 69: 1020 + 15 = 1035
Step 70: 1035 + 15 = 1050
Step 71: 1050 + 15 = 1065
Step 72: 1065 + 15 = 1080
Step 73: 1080 + 15 = 1095
Step 74: 1095 + 15 = 1110
Step 75: 1110 + 15 = 1125
Step 76: 1125 + 15 = 1140
Step 77: 1140 + 15 = 1155
Step 78: 1155 + 15 = 1170
Step 79: 1170 + 15 = 1185
Step 80: 1185 + 15 = 1200
Step 81: 1200 + 15 = 1215
Step 82: 1215 + 15 = 1230
Step 83: 1230 + 15 = 1245
Step 84: 1245 + 15 = 1260
Step 85: 1260 + 15 = 1275
Step 86: 1275 + 15 = 1290
Step 87: 1290 + 15 = 1305
Step 88: 1305 + 15 = 1320
Step 89: 1320 + 15 = 1335
Step 90: 1335 + 15 = 1350
Step 91: 1350 + 15 = 1365
Step 92: 1365 + 15 = 1380
Step 93: 1380 + 15 = 1395
Step 94: 1395 + 15 = 1410
Step 95: 1410 + 15 = 1425
Step 96: 1425 + 15 = 1440
Step 97: 1440 + 15 = 1455
Step 98: 1455 + 15 = 1470
Step 99: 1470 + 15 = 1485
Step 100: 1485 + 15 = 1500
Step 101: 1500 + 15 = 1515
Step 102: 1515 + 15 = 1530
Step 103: 1530 + 15 = 1545
Step 104: 1545 + 15 = 1560
Step 105: 1560 + 15 = 1575
Step 106: 1575 + 15 = 1590
Step 107: 1590 + 15 = 1605
Step 108: 1605 + 15 = 1620
Step 109: 1620 + 15 = 1635
Step 110: 1635 + 15 = 1650
Step 111: 1650 + 15 = 1665
Step 112: 1665 + 15 = 1680
Step 113: 1680 + 15 = 1695
Step 114: 1695 + 15 = 1710
Step 115: 1710 + 15 = 1725
Step 116: 1725 + 15 = 1740
Step 117: 1740 + 15 = 1755
Step 118: 1755 + 15 = 1770
Step 119: 1770 + 15 = 1785
Step 120: 1785 + 15 = 1800
Step 121: 1800 + 15 = 1815
Step 122: 1815 + 15 = 1830
Step 123: 1830 + 15 = 1845
Step 124: 1845 + 15 = 1860
Step 125: 1860 + 15 = 1875
Step 126: 1875 + 15 = 1890
Step 127: 1890 + 15 = 1905
Step 128: 1905 + 15 = 1920
Step 129: 1920 + 15 = 1935
Step 130: 1935 + 15 = 1950
Step 131: 1950 + 15 = 1965
Step 132: 1965 + 15 = 1980
Step 133: 1980 + 15 = 1995
Step 134: 1995 + 15 = 2010
Step 135: 2010 + 15 = 2025
Step 136: 2025 + 15 = 2040
Step 137: 2040 + 15 = 2055
Step 138: 2055 + 15 = 2070
Step 139: 2070 + 15 = 2085
Step 140: 2085 + 15 = 2100
Step 141: 2100 + 15 = 2115
Step 142: 2115 + 15 = 2130
Step 143: 2130 + 15 = 2145
Step 144: 2145 + 15 = 2160
Step 145: 2160 + 15 = 2175
Step 146: 2175 + 15 = 2190
Step 147: 2190 + 15 = 2205
Step 148: 2205 + 15 = 2220
Step 149: 2220 + 15 = 2235
Step 150: 2235 + 15 = 2250
Step 151: 2250 + 15 = 2265
Step 152: 2265 + 15 = 2280
Step 153: 2280 + 15 = 2295
Step 154: 2295 + 15 = 2310
Step 155: 2310 + 15 = 2325
Step 156: 2325 + 15 = 2340
Step 157: 2340 + 15 = 2355
Step 158: 2355 + 15 = 2370
Step 159: 2370 + 15 = 2385
Step 160: 2385 + 15 = 2400
Step 161: 2400 + 15 = 2415
Step 162: 2415 + 15 = 2430
Step 163: 2430 + 15 = 2445
Step 164: 2445 + 15 = 2460
Step 165: 2460 + 15 = 2475
Step 166: 2475 + 15 = 2490
Step 167: 2490 + 15 = 2505
Step 168: 2505 + 15 = 2520
Step 169: 2520 + 15 = 2535
Step 170: 2535 + 15 = 2550
Step 171: 2550 + 15 = 2565
Step 172: 2565 + 15 = 2580
Step 173: 2580 + 15 = 2595
Step 174: 2595 + 15 = 2610
Step 175: 2610 + 15 = 2625
Step 176: 2625 + 15 = 2640
Step 177: 2640 + 15 = 2655
Step 178: 2655 + 15 = 2670
Step 179: 2670 + 15 = 2685
Step 180: 2685 + 15 = 2700
Step 181: 2700 + 15 = 2715
Step 182: 2715 + 15 = 2730
Step 183: 2730 + 15 = 2745
Step 184: 2745 + 15 = 2760
Step 185: 2760 + 15 = 2775
Step 186: 2775 + 15 = 2790
Step 187: 2790 + 15 = 2805
Step 188: 2805 + 15 = 2820
Step 189: 2820 + 15 = 2835
Step 190: 2835 + 15 = 2850
Step 191: 2850 + 15 = 2865
Step 192: 2865 + 15 = 2880
Step 193: 2880 + 15 = 2895
Step 194: 2895 + 15 = 2910
Step 195: 2910 + 15 = 2925
Step 196: 2925 + 15 = 2940
Step 197: 2940 + 15 = 2955
Step 198: 2955 + 15 = 2970
Step 199: 2970 + 15 = 2985
Step 200: 2985 + 15 = 3000
Step 201: 3000 + 15 = 3015
Step 202: 3015 + 15 = 3030
Step 203: 3030 + 15 = 3045
Step 204: 3045 + 15 = 3060
Step 205: 3060 + 15 = 3075
Step 206: 3075 + 15 = 3090
Step 207: 3090 + 15 = 3105
Step 208: 3105 + 15 = 3120
Step 209: 3120 + 15 = 3135
Step 210: 3135 + 15 = 3150
Step 211: 3150 + 15 = 3165
Step 212: 3165 + 15 = 3180
Step 213: 3180 + 15 = 3195
Step 214: 3195 + 15 = 3210
Step 215: 3210 + 15 = 3225
Step 216: 3225 + 15 = 3240
Step 217: 3240 + 15 = 3255
Step 218: 3255 + 15 = 3270
Step 219: 3270 + 15 = 3285
Step 220: 3285 + 15 = 3300
Step 221: 3300 + 15 = 3315
Step 222: 3315 + 15 = 3330
Step 223: 3330 + 15 = 3345
Step 224: 3345 + 15 = 3360
Step 225: 3360 + 15 = 3375
Step 226: 3375 + 15 = 3390
Step 227: 3390 + 15 = 3405
Step 228: 3405 + 15 = 3420
Step 229: 3420 + 15 = 3435
Step 230: 3435 + 15 = 3450
Step 231: 3450 + 15 = 3465
Step 232: 3465 + 15 = 3480
Step 233: 3480 + 15 = 3495
Step 234: 3495 + 15 = 3510
Step 235: 3510 + 15 = 3525
Step 236: 3525 + 15 = 3540
Step 237: 3540 + 15 = 3555
Step 238: 3555 + 15 = 3570
Step 239: 3570 + 15 = 3585
Step 240: 3585 + 15 = 3600
Step 241: 3600 + 15 = 3615
Step 242: 3615 + 15 = 3630
Step 243: 3630 + 15 = 3645
Step 244: 3645 + 15 = 3660
Step 245: 3660 + 15 = 3675
Step 246: 3675 + 15 = 3690
Step 247: 3690 + 15 = 3705
Step 248: 3705 + 15 = 3720
Step 249: 3720 + 15 = 3735
Step 250: 3735 + 15 = 3750
Step 251: 3750 + 15 = 3765
Step 252: 3765 + 15 = 3780
Step 253: 3780 + 15 = 3795
Step 254: 3795 + 15 = 3810
Step 255: 3810 + 15 = 3825
Step 256: 3825 + 15 = 3840
Step 257: 3840 + 15 = 3855
Step 258: 3855 + 15 = 3870
Step 259: 3870 + 15 = 3885
Step 260: 3885 + 15 = 3900
Step 261: 3900 + 15 = 3915
Step 262: 3915 + 15 = 3930
Step 263: 3930 + 15 = 3945
Step 264: 3945 + 15 = 3960
Step 265: 3960 + 15 = 3975
Step 266: 3975 + 15 = 3990
Step 267: 3990 + 15 = 4005
Step 268: 4005 + 15 = 4020
Step 269: 4020 + 15 = 4035
Step 270: 4035 + 15 = 4050
Step 271: 4050 + 15 = 4065
Step 272: 4065 + 15 = 4080
Step 273: 4080 + 15 = 4095
Step 274: 4095 + 15 = 4110
Step 275: 4110 + 15 = 4125
Step 276: 4125 + 15 = 4140
Step 277: 4140 + 15 = 4155
Step 278: 4155 + 15 = 4170
Step 279: 4170 + 15 = 4185
Step 280: 4185 + 15 = 4200
Step 281: 4200 + 15 = 4215
Step 282: 4215 + 15 = 4230
Step 283: 4230 + 15 = 4245
Step 284: 4245 + 15 = 4260
Step 285: 4260 + 15 = 4275
Step 286: 4275 + 15 = 4290
Step 287: 4290 + 15 = 4305
Step 288: 4305 + 15 = 4320
Step 289: 4320 + 15 = 4335
Step 290: 4335 + 15 = 4350
Step 291: 4350 + 15 = 4365
Step 292: 4365 + 15 = 4380
Step 293: 4380 + 15 = 4395
Step 294: 4395 + 15 = 4410
Step 295: 4410 + 15 = 4425
Step 296: 4425 + 15 = 4440
Step 297: 4440 + 15 = 4455
Step 298: 4455 + 15 = 4470
Step 299: 4470 + 15 = 4485
Step 300: 4485 + 15 = 4500
Step 301: 4500 + 15 = 4515
Step 302: 4515 + 15 = 4530
Step 303: 4530 + 15 = 4545
Step 304: 4545 + 15 = 4560
Step 305: 4560 + 15 = 4575
Step 306: 4575 + 15 = 4590
Step 307: 4590 + 15 = 4605
Step 308: 4605 + 15 = 4620
Step 309: 4620 + 15 = 4635
Step 310: 4635 + 15 = 4650
Step 311: 4650 + 15 = 4665
Step 312: 4665 + 15 = 4680
Step 313: 4680 + 15 = 4695
Step 314: 4695 + 15 = 4710
Step 315: 4710 + 15 = 4725
Step 316: 4725 + 15 = 4740
Step 317: 4740 + 15 = 4755
Step 318: 4755 + 15 = 4770
Step 319: 4770 + 15 = 4785
Step 320: 4785 + 15 = 4800
Step 321: 4800 + 15 = 4815
Step 322: 4815 + 15 = 4830
Step 323: 4830 + 15 = 4845
Step 324: 4845 + 15 = 4860
Step 325: 4860 + 15 = 4875
Step 326: 4875 + 15 = 4890
Step 327: 4890 + 15 = 4905
Step 328: 4905 + 15 = 4920
Step 329: 4920 + 15 = 4935
Step 330: 4935 + 15 = 4950
Step 331: 4950 + 15 = 4965
Step 332: 4965 + 15 = 4980
Step 333: 4980 + 15 = 4995
Step 334: 4995 + 15 = 5010
Step 335: 5010 + 15 = 5025
Step 336: 5025 + 15 = 5040
Step 337: 5040 + 15 = 5055
Step 338: 5055 + 15 = 5070
Step 339: 5070 + 15 = 5085
Step 340: 5085 + 15 = 5100
Step 341: 5100 + 15 = 5115
Step 342: 5115 + 15 = 5130
Step 343: 5130 + 15 = 5145
Step 344: 5145 + 15 = 5160
Step 345: 5160 + 15 = 5175
Step 346: 5175 + 15 = 5190
Step 347: 5190 + 15 = 5205
Step 348: 5205 + 15 = 5220
Step 349: 5220 + 15 = 5235
Step 350: 5235 + 15 = 5250
Step 351: 5250 + 15 = 5265
Step 352: 5265 + 15 = 5280
Step 353: 5280 + 15 = 5295
Step 354: 5295 + 15 = 5310

So, 15*354 = 5310