Alright, let's solve this math problem step by step. First, we have the number 615. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 345. So, we're going to take the number 615 and add it to itself 345 times.
Step 1: 0 + 615 = 615
Step 2: 615 + 615 = 1230
Step 3: 1230 + 615 = 1845
Step 4: 1845 + 615 = 2460
Step 5: 2460 + 615 = 3075
Step 6: 3075 + 615 = 3690
Step 7: 3690 + 615 = 4305
Step 8: 4305 + 615 = 4920
Step 9: 4920 + 615 = 5535
Step 10: 5535 + 615 = 6150
Step 11: 6150 + 615 = 6765
Step 12: 6765 + 615 = 7380
Step 13: 7380 + 615 = 7995
Step 14: 7995 + 615 = 8610
Step 15: 8610 + 615 = 9225
Step 16: 9225 + 615 = 9840
Step 17: 9840 + 615 = 10455
Step 18: 10455 + 615 = 11070
Step 19: 11070 + 615 = 11685
Step 20: 11685 + 615 = 12300
Step 21: 12300 + 615 = 12915
Step 22: 12915 + 615 = 13530
Step 23: 13530 + 615 = 14145
Step 24: 14145 + 615 = 14760
Step 25: 14760 + 615 = 15375
Step 26: 15375 + 615 = 15990
Step 27: 15990 + 615 = 16605
Step 28: 16605 + 615 = 17220
Step 29: 17220 + 615 = 17835
Step 30: 17835 + 615 = 18450
Step 31: 18450 + 615 = 19065
Step 32: 19065 + 615 = 19680
Step 33: 19680 + 615 = 20295
Step 34: 20295 + 615 = 20910
Step 35: 20910 + 615 = 21525
Step 36: 21525 + 615 = 22140
Step 37: 22140 + 615 = 22755
Step 38: 22755 + 615 = 23370
Step 39: 23370 + 615 = 23985
Step 40: 23985 + 615 = 24600
Step 41: 24600 + 615 = 25215
Step 42: 25215 + 615 = 25830
Step 43: 25830 + 615 = 26445
Step 44: 26445 + 615 = 27060
Step 45: 27060 + 615 = 27675
Step 46: 27675 + 615 = 28290
Step 47: 28290 + 615 = 28905
Step 48: 28905 + 615 = 29520
Step 49: 29520 + 615 = 30135
Step 50: 30135 + 615 = 30750
Step 51: 30750 + 615 = 31365
Step 52: 31365 + 615 = 31980
Step 53: 31980 + 615 = 32595
Step 54: 32595 + 615 = 33210
Step 55: 33210 + 615 = 33825
Step 56: 33825 + 615 = 34440
Step 57: 34440 + 615 = 35055
Step 58: 35055 + 615 = 35670
Step 59: 35670 + 615 = 36285
Step 60: 36285 + 615 = 36900
Step 61: 36900 + 615 = 37515
Step 62: 37515 + 615 = 38130
Step 63: 38130 + 615 = 38745
Step 64: 38745 + 615 = 39360
Step 65: 39360 + 615 = 39975
Step 66: 39975 + 615 = 40590
Step 67: 40590 + 615 = 41205
Step 68: 41205 + 615 = 41820
Step 69: 41820 + 615 = 42435
Step 70: 42435 + 615 = 43050
Step 71: 43050 + 615 = 43665
Step 72: 43665 + 615 = 44280
Step 73: 44280 + 615 = 44895
Step 74: 44895 + 615 = 45510
Step 75: 45510 + 615 = 46125
Step 76: 46125 + 615 = 46740
Step 77: 46740 + 615 = 47355
Step 78: 47355 + 615 = 47970
Step 79: 47970 + 615 = 48585
Step 80: 48585 + 615 = 49200
Step 81: 49200 + 615 = 49815
Step 82: 49815 + 615 = 50430
Step 83: 50430 + 615 = 51045
Step 84: 51045 + 615 = 51660
Step 85: 51660 + 615 = 52275
Step 86: 52275 + 615 = 52890
Step 87: 52890 + 615 = 53505
Step 88: 53505 + 615 = 54120
Step 89: 54120 + 615 = 54735
Step 90: 54735 + 615 = 55350
Step 91: 55350 + 615 = 55965
Step 92: 55965 + 615 = 56580
Step 93: 56580 + 615 = 57195
Step 94: 57195 + 615 = 57810
Step 95: 57810 + 615 = 58425
Step 96: 58425 + 615 = 59040
Step 97: 59040 + 615 = 59655
Step 98: 59655 + 615 = 60270
Step 99: 60270 + 615 = 60885
Step 100: 60885 + 615 = 61500
Step 101: 61500 + 615 = 62115
Step 102: 62115 + 615 = 62730
Step 103: 62730 + 615 = 63345
Step 104: 63345 + 615 = 63960
Step 105: 63960 + 615 = 64575
Step 106: 64575 + 615 = 65190
Step 107: 65190 + 615 = 65805
Step 108: 65805 + 615 = 66420
Step 109: 66420 + 615 = 67035
Step 110: 67035 + 615 = 67650
Step 111: 67650 + 615 = 68265
Step 112: 68265 + 615 = 68880
Step 113: 68880 + 615 = 69495
Step 114: 69495 + 615 = 70110
Step 115: 70110 + 615 = 70725
Step 116: 70725 + 615 = 71340
Step 117: 71340 + 615 = 71955
Step 118: 71955 + 615 = 72570
Step 119: 72570 + 615 = 73185
Step 120: 73185 + 615 = 73800
Step 121: 73800 + 615 = 74415
Step 122: 74415 + 615 = 75030
Step 123: 75030 + 615 = 75645
Step 124: 75645 + 615 = 76260
Step 125: 76260 + 615 = 76875
Step 126: 76875 + 615 = 77490
Step 127: 77490 + 615 = 78105
Step 128: 78105 + 615 = 78720
Step 129: 78720 + 615 = 79335
Step 130: 79335 + 615 = 79950
Step 131: 79950 + 615 = 80565
Step 132: 80565 + 615 = 81180
Step 133: 81180 + 615 = 81795
Step 134: 81795 + 615 = 82410
Step 135: 82410 + 615 = 83025
Step 136: 83025 + 615 = 83640
Step 137: 83640 + 615 = 84255
Step 138: 84255 + 615 = 84870
Step 139: 84870 + 615 = 85485
Step 140: 85485 + 615 = 86100
Step 141: 86100 + 615 = 86715
Step 142: 86715 + 615 = 87330
Step 143: 87330 + 615 = 87945
Step 144: 87945 + 615 = 88560
Step 145: 88560 + 615 = 89175
Step 146: 89175 + 615 = 89790
Step 147: 89790 + 615 = 90405
Step 148: 90405 + 615 = 91020
Step 149: 91020 + 615 = 91635
Step 150: 91635 + 615 = 92250
Step 151: 92250 + 615 = 92865
Step 152: 92865 + 615 = 93480
Step 153: 93480 + 615 = 94095
Step 154: 94095 + 615 = 94710
Step 155: 94710 + 615 = 95325
Step 156: 95325 + 615 = 95940
Step 157: 95940 + 615 = 96555
Step 158: 96555 + 615 = 97170
Step 159: 97170 + 615 = 97785
Step 160: 97785 + 615 = 98400
Step 161: 98400 + 615 = 99015
Step 162: 99015 + 615 = 99630
Step 163: 99630 + 615 = 100245
Step 164: 100245 + 615 = 100860
Step 165: 100860 + 615 = 101475
Step 166: 101475 + 615 = 102090
Step 167: 102090 + 615 = 102705
Step 168: 102705 + 615 = 103320
Step 169: 103320 + 615 = 103935
Step 170: 103935 + 615 = 104550
Step 171: 104550 + 615 = 105165
Step 172: 105165 + 615 = 105780
Step 173: 105780 + 615 = 106395
Step 174: 106395 + 615 = 107010
Step 175: 107010 + 615 = 107625
Step 176: 107625 + 615 = 108240
Step 177: 108240 + 615 = 108855
Step 178: 108855 + 615 = 109470
Step 179: 109470 + 615 = 110085
Step 180: 110085 + 615 = 110700
Step 181: 110700 + 615 = 111315
Step 182: 111315 + 615 = 111930
Step 183: 111930 + 615 = 112545
Step 184: 112545 + 615 = 113160
Step 185: 113160 + 615 = 113775
Step 186: 113775 + 615 = 114390
Step 187: 114390 + 615 = 115005
Step 188: 115005 + 615 = 115620
Step 189: 115620 + 615 = 116235
Step 190: 116235 + 615 = 116850
Step 191: 116850 + 615 = 117465
Step 192: 117465 + 615 = 118080
Step 193: 118080 + 615 = 118695
Step 194: 118695 + 615 = 119310
Step 195: 119310 + 615 = 119925
Step 196: 119925 + 615 = 120540
Step 197: 120540 + 615 = 121155
Step 198: 121155 + 615 = 121770
Step 199: 121770 + 615 = 122385
Step 200: 122385 + 615 = 123000
Step 201: 123000 + 615 = 123615
Step 202: 123615 + 615 = 124230
Step 203: 124230 + 615 = 124845
Step 204: 124845 + 615 = 125460
Step 205: 125460 + 615 = 126075
Step 206: 126075 + 615 = 126690
Step 207: 126690 + 615 = 127305
Step 208: 127305 + 615 = 127920
Step 209: 127920 + 615 = 128535
Step 210: 128535 + 615 = 129150
Step 211: 129150 + 615 = 129765
Step 212: 129765 + 615 = 130380
Step 213: 130380 + 615 = 130995
Step 214: 130995 + 615 = 131610
Step 215: 131610 + 615 = 132225
Step 216: 132225 + 615 = 132840
Step 217: 132840 + 615 = 133455
Step 218: 133455 + 615 = 134070
Step 219: 134070 + 615 = 134685
Step 220: 134685 + 615 = 135300
Step 221: 135300 + 615 = 135915
Step 222: 135915 + 615 = 136530
Step 223: 136530 + 615 = 137145
Step 224: 137145 + 615 = 137760
Step 225: 137760 + 615 = 138375
Step 226: 138375 + 615 = 138990
Step 227: 138990 + 615 = 139605
Step 228: 139605 + 615 = 140220
Step 229: 140220 + 615 = 140835
Step 230: 140835 + 615 = 141450
Step 231: 141450 + 615 = 142065
Step 232: 142065 + 615 = 142680
Step 233: 142680 + 615 = 143295
Step 234: 143295 + 615 = 143910
Step 235: 143910 + 615 = 144525
Step 236: 144525 + 615 = 145140
Step 237: 145140 + 615 = 145755
Step 238: 145755 + 615 = 146370
Step 239: 146370 + 615 = 146985
Step 240: 146985 + 615 = 147600
Step 241: 147600 + 615 = 148215
Step 242: 148215 + 615 = 148830
Step 243: 148830 + 615 = 149445
Step 244: 149445 + 615 = 150060
Step 245: 150060 + 615 = 150675
Step 246: 150675 + 615 = 151290
Step 247: 151290 + 615 = 151905
Step 248: 151905 + 615 = 152520
Step 249: 152520 + 615 = 153135
Step 250: 153135 + 615 = 153750
Step 251: 153750 + 615 = 154365
Step 252: 154365 + 615 = 154980
Step 253: 154980 + 615 = 155595
Step 254: 155595 + 615 = 156210
Step 255: 156210 + 615 = 156825
Step 256: 156825 + 615 = 157440
Step 257: 157440 + 615 = 158055
Step 258: 158055 + 615 = 158670
Step 259: 158670 + 615 = 159285
Step 260: 159285 + 615 = 159900
Step 261: 159900 + 615 = 160515
Step 262: 160515 + 615 = 161130
Step 263: 161130 + 615 = 161745
Step 264: 161745 + 615 = 162360
Step 265: 162360 + 615 = 162975
Step 266: 162975 + 615 = 163590
Step 267: 163590 + 615 = 164205
Step 268: 164205 + 615 = 164820
Step 269: 164820 + 615 = 165435
Step 270: 165435 + 615 = 166050
Step 271: 166050 + 615 = 166665
Step 272: 166665 + 615 = 167280
Step 273: 167280 + 615 = 167895
Step 274: 167895 + 615 = 168510
Step 275: 168510 + 615 = 169125
Step 276: 169125 + 615 = 169740
Step 277: 169740 + 615 = 170355
Step 278: 170355 + 615 = 170970
Step 279: 170970 + 615 = 171585
Step 280: 171585 + 615 = 172200
Step 281: 172200 + 615 = 172815
Step 282: 172815 + 615 = 173430
Step 283: 173430 + 615 = 174045
Step 284: 174045 + 615 = 174660
Step 285: 174660 + 615 = 175275
Step 286: 175275 + 615 = 175890
Step 287: 175890 + 615 = 176505
Step 288: 176505 + 615 = 177120
Step 289: 177120 + 615 = 177735
Step 290: 177735 + 615 = 178350
Step 291: 178350 + 615 = 178965
Step 292: 178965 + 615 = 179580
Step 293: 179580 + 615 = 180195
Step 294: 180195 + 615 = 180810
Step 295: 180810 + 615 = 181425
Step 296: 181425 + 615 = 182040
Step 297: 182040 + 615 = 182655
Step 298: 182655 + 615 = 183270
Step 299: 183270 + 615 = 183885
Step 300: 183885 + 615 = 184500
Step 301: 184500 + 615 = 185115
Step 302: 185115 + 615 = 185730
Step 303: 185730 + 615 = 186345
Step 304: 186345 + 615 = 186960
Step 305: 186960 + 615 = 187575
Step 306: 187575 + 615 = 188190
Step 307: 188190 + 615 = 188805
Step 308: 188805 + 615 = 189420
Step 309: 189420 + 615 = 190035
Step 310: 190035 + 615 = 190650
Step 311: 190650 + 615 = 191265
Step 312: 191265 + 615 = 191880
Step 313: 191880 + 615 = 192495
Step 314: 192495 + 615 = 193110
Step 315: 193110 + 615 = 193725
Step 316: 193725 + 615 = 194340
Step 317: 194340 + 615 = 194955
Step 318: 194955 + 615 = 195570
Step 319: 195570 + 615 = 196185
Step 320: 196185 + 615 = 196800
Step 321: 196800 + 615 = 197415
Step 322: 197415 + 615 = 198030
Step 323: 198030 + 615 = 198645
Step 324: 198645 + 615 = 199260
Step 325: 199260 + 615 = 199875
Step 326: 199875 + 615 = 200490
Step 327: 200490 + 615 = 201105
Step 328: 201105 + 615 = 201720
Step 329: 201720 + 615 = 202335
Step 330: 202335 + 615 = 202950
Step 331: 202950 + 615 = 203565
Step 332: 203565 + 615 = 204180
Step 333: 204180 + 615 = 204795
Step 334: 204795 + 615 = 205410
Step 335: 205410 + 615 = 206025
Step 336: 206025 + 615 = 206640
Step 337: 206640 + 615 = 207255
Step 338: 207255 + 615 = 207870
Step 339: 207870 + 615 = 208485
Step 340: 208485 + 615 = 209100
Step 341: 209100 + 615 = 209715
Step 342: 209715 + 615 = 210330
Step 343: 210330 + 615 = 210945
Step 344: 210945 + 615 = 211560
Step 345: 211560 + 615 = 212175

So, 615*345 = 212175