Alright, let's solve this math problem step by step. First, we have the number 915. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 231. So, we're going to take the number 915 and add it to itself 231 times.
Step 1: 0 + 915 = 915
Step 2: 915 + 915 = 1830
Step 3: 1830 + 915 = 2745
Step 4: 2745 + 915 = 3660
Step 5: 3660 + 915 = 4575
Step 6: 4575 + 915 = 5490
Step 7: 5490 + 915 = 6405
Step 8: 6405 + 915 = 7320
Step 9: 7320 + 915 = 8235
Step 10: 8235 + 915 = 9150
Step 11: 9150 + 915 = 10065
Step 12: 10065 + 915 = 10980
Step 13: 10980 + 915 = 11895
Step 14: 11895 + 915 = 12810
Step 15: 12810 + 915 = 13725
Step 16: 13725 + 915 = 14640
Step 17: 14640 + 915 = 15555
Step 18: 15555 + 915 = 16470
Step 19: 16470 + 915 = 17385
Step 20: 17385 + 915 = 18300
Step 21: 18300 + 915 = 19215
Step 22: 19215 + 915 = 20130
Step 23: 20130 + 915 = 21045
Step 24: 21045 + 915 = 21960
Step 25: 21960 + 915 = 22875
Step 26: 22875 + 915 = 23790
Step 27: 23790 + 915 = 24705
Step 28: 24705 + 915 = 25620
Step 29: 25620 + 915 = 26535
Step 30: 26535 + 915 = 27450
Step 31: 27450 + 915 = 28365
Step 32: 28365 + 915 = 29280
Step 33: 29280 + 915 = 30195
Step 34: 30195 + 915 = 31110
Step 35: 31110 + 915 = 32025
Step 36: 32025 + 915 = 32940
Step 37: 32940 + 915 = 33855
Step 38: 33855 + 915 = 34770
Step 39: 34770 + 915 = 35685
Step 40: 35685 + 915 = 36600
Step 41: 36600 + 915 = 37515
Step 42: 37515 + 915 = 38430
Step 43: 38430 + 915 = 39345
Step 44: 39345 + 915 = 40260
Step 45: 40260 + 915 = 41175
Step 46: 41175 + 915 = 42090
Step 47: 42090 + 915 = 43005
Step 48: 43005 + 915 = 43920
Step 49: 43920 + 915 = 44835
Step 50: 44835 + 915 = 45750
Step 51: 45750 + 915 = 46665
Step 52: 46665 + 915 = 47580
Step 53: 47580 + 915 = 48495
Step 54: 48495 + 915 = 49410
Step 55: 49410 + 915 = 50325
Step 56: 50325 + 915 = 51240
Step 57: 51240 + 915 = 52155
Step 58: 52155 + 915 = 53070
Step 59: 53070 + 915 = 53985
Step 60: 53985 + 915 = 54900
Step 61: 54900 + 915 = 55815
Step 62: 55815 + 915 = 56730
Step 63: 56730 + 915 = 57645
Step 64: 57645 + 915 = 58560
Step 65: 58560 + 915 = 59475
Step 66: 59475 + 915 = 60390
Step 67: 60390 + 915 = 61305
Step 68: 61305 + 915 = 62220
Step 69: 62220 + 915 = 63135
Step 70: 63135 + 915 = 64050
Step 71: 64050 + 915 = 64965
Step 72: 64965 + 915 = 65880
Step 73: 65880 + 915 = 66795
Step 74: 66795 + 915 = 67710
Step 75: 67710 + 915 = 68625
Step 76: 68625 + 915 = 69540
Step 77: 69540 + 915 = 70455
Step 78: 70455 + 915 = 71370
Step 79: 71370 + 915 = 72285
Step 80: 72285 + 915 = 73200
Step 81: 73200 + 915 = 74115
Step 82: 74115 + 915 = 75030
Step 83: 75030 + 915 = 75945
Step 84: 75945 + 915 = 76860
Step 85: 76860 + 915 = 77775
Step 86: 77775 + 915 = 78690
Step 87: 78690 + 915 = 79605
Step 88: 79605 + 915 = 80520
Step 89: 80520 + 915 = 81435
Step 90: 81435 + 915 = 82350
Step 91: 82350 + 915 = 83265
Step 92: 83265 + 915 = 84180
Step 93: 84180 + 915 = 85095
Step 94: 85095 + 915 = 86010
Step 95: 86010 + 915 = 86925
Step 96: 86925 + 915 = 87840
Step 97: 87840 + 915 = 88755
Step 98: 88755 + 915 = 89670
Step 99: 89670 + 915 = 90585
Step 100: 90585 + 915 = 91500
Step 101: 91500 + 915 = 92415
Step 102: 92415 + 915 = 93330
Step 103: 93330 + 915 = 94245
Step 104: 94245 + 915 = 95160
Step 105: 95160 + 915 = 96075
Step 106: 96075 + 915 = 96990
Step 107: 96990 + 915 = 97905
Step 108: 97905 + 915 = 98820
Step 109: 98820 + 915 = 99735
Step 110: 99735 + 915 = 100650
Step 111: 100650 + 915 = 101565
Step 112: 101565 + 915 = 102480
Step 113: 102480 + 915 = 103395
Step 114: 103395 + 915 = 104310
Step 115: 104310 + 915 = 105225
Step 116: 105225 + 915 = 106140
Step 117: 106140 + 915 = 107055
Step 118: 107055 + 915 = 107970
Step 119: 107970 + 915 = 108885
Step 120: 108885 + 915 = 109800
Step 121: 109800 + 915 = 110715
Step 122: 110715 + 915 = 111630
Step 123: 111630 + 915 = 112545
Step 124: 112545 + 915 = 113460
Step 125: 113460 + 915 = 114375
Step 126: 114375 + 915 = 115290
Step 127: 115290 + 915 = 116205
Step 128: 116205 + 915 = 117120
Step 129: 117120 + 915 = 118035
Step 130: 118035 + 915 = 118950
Step 131: 118950 + 915 = 119865
Step 132: 119865 + 915 = 120780
Step 133: 120780 + 915 = 121695
Step 134: 121695 + 915 = 122610
Step 135: 122610 + 915 = 123525
Step 136: 123525 + 915 = 124440
Step 137: 124440 + 915 = 125355
Step 138: 125355 + 915 = 126270
Step 139: 126270 + 915 = 127185
Step 140: 127185 + 915 = 128100
Step 141: 128100 + 915 = 129015
Step 142: 129015 + 915 = 129930
Step 143: 129930 + 915 = 130845
Step 144: 130845 + 915 = 131760
Step 145: 131760 + 915 = 132675
Step 146: 132675 + 915 = 133590
Step 147: 133590 + 915 = 134505
Step 148: 134505 + 915 = 135420
Step 149: 135420 + 915 = 136335
Step 150: 136335 + 915 = 137250
Step 151: 137250 + 915 = 138165
Step 152: 138165 + 915 = 139080
Step 153: 139080 + 915 = 139995
Step 154: 139995 + 915 = 140910
Step 155: 140910 + 915 = 141825
Step 156: 141825 + 915 = 142740
Step 157: 142740 + 915 = 143655
Step 158: 143655 + 915 = 144570
Step 159: 144570 + 915 = 145485
Step 160: 145485 + 915 = 146400
Step 161: 146400 + 915 = 147315
Step 162: 147315 + 915 = 148230
Step 163: 148230 + 915 = 149145
Step 164: 149145 + 915 = 150060
Step 165: 150060 + 915 = 150975
Step 166: 150975 + 915 = 151890
Step 167: 151890 + 915 = 152805
Step 168: 152805 + 915 = 153720
Step 169: 153720 + 915 = 154635
Step 170: 154635 + 915 = 155550
Step 171: 155550 + 915 = 156465
Step 172: 156465 + 915 = 157380
Step 173: 157380 + 915 = 158295
Step 174: 158295 + 915 = 159210
Step 175: 159210 + 915 = 160125
Step 176: 160125 + 915 = 161040
Step 177: 161040 + 915 = 161955
Step 178: 161955 + 915 = 162870
Step 179: 162870 + 915 = 163785
Step 180: 163785 + 915 = 164700
Step 181: 164700 + 915 = 165615
Step 182: 165615 + 915 = 166530
Step 183: 166530 + 915 = 167445
Step 184: 167445 + 915 = 168360
Step 185: 168360 + 915 = 169275
Step 186: 169275 + 915 = 170190
Step 187: 170190 + 915 = 171105
Step 188: 171105 + 915 = 172020
Step 189: 172020 + 915 = 172935
Step 190: 172935 + 915 = 173850
Step 191: 173850 + 915 = 174765
Step 192: 174765 + 915 = 175680
Step 193: 175680 + 915 = 176595
Step 194: 176595 + 915 = 177510
Step 195: 177510 + 915 = 178425
Step 196: 178425 + 915 = 179340
Step 197: 179340 + 915 = 180255
Step 198: 180255 + 915 = 181170
Step 199: 181170 + 915 = 182085
Step 200: 182085 + 915 = 183000
Step 201: 183000 + 915 = 183915
Step 202: 183915 + 915 = 184830
Step 203: 184830 + 915 = 185745
Step 204: 185745 + 915 = 186660
Step 205: 186660 + 915 = 187575
Step 206: 187575 + 915 = 188490
Step 207: 188490 + 915 = 189405
Step 208: 189405 + 915 = 190320
Step 209: 190320 + 915 = 191235
Step 210: 191235 + 915 = 192150
Step 211: 192150 + 915 = 193065
Step 212: 193065 + 915 = 193980
Step 213: 193980 + 915 = 194895
Step 214: 194895 + 915 = 195810
Step 215: 195810 + 915 = 196725
Step 216: 196725 + 915 = 197640
Step 217: 197640 + 915 = 198555
Step 218: 198555 + 915 = 199470
Step 219: 199470 + 915 = 200385
Step 220: 200385 + 915 = 201300
Step 221: 201300 + 915 = 202215
Step 222: 202215 + 915 = 203130
Step 223: 203130 + 915 = 204045
Step 224: 204045 + 915 = 204960
Step 225: 204960 + 915 = 205875
Step 226: 205875 + 915 = 206790
Step 227: 206790 + 915 = 207705
Step 228: 207705 + 915 = 208620
Step 229: 208620 + 915 = 209535
Step 230: 209535 + 915 = 210450
Step 231: 210450 + 915 = 211365

So, 915*231 = 211365