Alright, let's solve this math problem step by step. First, we have the number 278. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 145. So, we're going to take the number 278 and add it to itself 145 times.
Step 1: 0 + 278 = 278
Step 2: 278 + 278 = 556
Step 3: 556 + 278 = 834
Step 4: 834 + 278 = 1112
Step 5: 1112 + 278 = 1390
Step 6: 1390 + 278 = 1668
Step 7: 1668 + 278 = 1946
Step 8: 1946 + 278 = 2224
Step 9: 2224 + 278 = 2502
Step 10: 2502 + 278 = 2780
Step 11: 2780 + 278 = 3058
Step 12: 3058 + 278 = 3336
Step 13: 3336 + 278 = 3614
Step 14: 3614 + 278 = 3892
Step 15: 3892 + 278 = 4170
Step 16: 4170 + 278 = 4448
Step 17: 4448 + 278 = 4726
Step 18: 4726 + 278 = 5004
Step 19: 5004 + 278 = 5282
Step 20: 5282 + 278 = 5560
Step 21: 5560 + 278 = 5838
Step 22: 5838 + 278 = 6116
Step 23: 6116 + 278 = 6394
Step 24: 6394 + 278 = 6672
Step 25: 6672 + 278 = 6950
Step 26: 6950 + 278 = 7228
Step 27: 7228 + 278 = 7506
Step 28: 7506 + 278 = 7784
Step 29: 7784 + 278 = 8062
Step 30: 8062 + 278 = 8340
Step 31: 8340 + 278 = 8618
Step 32: 8618 + 278 = 8896
Step 33: 8896 + 278 = 9174
Step 34: 9174 + 278 = 9452
Step 35: 9452 + 278 = 9730
Step 36: 9730 + 278 = 10008
Step 37: 10008 + 278 = 10286
Step 38: 10286 + 278 = 10564
Step 39: 10564 + 278 = 10842
Step 40: 10842 + 278 = 11120
Step 41: 11120 + 278 = 11398
Step 42: 11398 + 278 = 11676
Step 43: 11676 + 278 = 11954
Step 44: 11954 + 278 = 12232
Step 45: 12232 + 278 = 12510
Step 46: 12510 + 278 = 12788
Step 47: 12788 + 278 = 13066
Step 48: 13066 + 278 = 13344
Step 49: 13344 + 278 = 13622
Step 50: 13622 + 278 = 13900
Step 51: 13900 + 278 = 14178
Step 52: 14178 + 278 = 14456
Step 53: 14456 + 278 = 14734
Step 54: 14734 + 278 = 15012
Step 55: 15012 + 278 = 15290
Step 56: 15290 + 278 = 15568
Step 57: 15568 + 278 = 15846
Step 58: 15846 + 278 = 16124
Step 59: 16124 + 278 = 16402
Step 60: 16402 + 278 = 16680
Step 61: 16680 + 278 = 16958
Step 62: 16958 + 278 = 17236
Step 63: 17236 + 278 = 17514
Step 64: 17514 + 278 = 17792
Step 65: 17792 + 278 = 18070
Step 66: 18070 + 278 = 18348
Step 67: 18348 + 278 = 18626
Step 68: 18626 + 278 = 18904
Step 69: 18904 + 278 = 19182
Step 70: 19182 + 278 = 19460
Step 71: 19460 + 278 = 19738
Step 72: 19738 + 278 = 20016
Step 73: 20016 + 278 = 20294
Step 74: 20294 + 278 = 20572
Step 75: 20572 + 278 = 20850
Step 76: 20850 + 278 = 21128
Step 77: 21128 + 278 = 21406
Step 78: 21406 + 278 = 21684
Step 79: 21684 + 278 = 21962
Step 80: 21962 + 278 = 22240
Step 81: 22240 + 278 = 22518
Step 82: 22518 + 278 = 22796
Step 83: 22796 + 278 = 23074
Step 84: 23074 + 278 = 23352
Step 85: 23352 + 278 = 23630
Step 86: 23630 + 278 = 23908
Step 87: 23908 + 278 = 24186
Step 88: 24186 + 278 = 24464
Step 89: 24464 + 278 = 24742
Step 90: 24742 + 278 = 25020
Step 91: 25020 + 278 = 25298
Step 92: 25298 + 278 = 25576
Step 93: 25576 + 278 = 25854
Step 94: 25854 + 278 = 26132
Step 95: 26132 + 278 = 26410
Step 96: 26410 + 278 = 26688
Step 97: 26688 + 278 = 26966
Step 98: 26966 + 278 = 27244
Step 99: 27244 + 278 = 27522
Step 100: 27522 + 278 = 27800
Step 101: 27800 + 278 = 28078
Step 102: 28078 + 278 = 28356
Step 103: 28356 + 278 = 28634
Step 104: 28634 + 278 = 28912
Step 105: 28912 + 278 = 29190
Step 106: 29190 + 278 = 29468
Step 107: 29468 + 278 = 29746
Step 108: 29746 + 278 = 30024
Step 109: 30024 + 278 = 30302
Step 110: 30302 + 278 = 30580
Step 111: 30580 + 278 = 30858
Step 112: 30858 + 278 = 31136
Step 113: 31136 + 278 = 31414
Step 114: 31414 + 278 = 31692
Step 115: 31692 + 278 = 31970
Step 116: 31970 + 278 = 32248
Step 117: 32248 + 278 = 32526
Step 118: 32526 + 278 = 32804
Step 119: 32804 + 278 = 33082
Step 120: 33082 + 278 = 33360
Step 121: 33360 + 278 = 33638
Step 122: 33638 + 278 = 33916
Step 123: 33916 + 278 = 34194
Step 124: 34194 + 278 = 34472
Step 125: 34472 + 278 = 34750
Step 126: 34750 + 278 = 35028
Step 127: 35028 + 278 = 35306
Step 128: 35306 + 278 = 35584
Step 129: 35584 + 278 = 35862
Step 130: 35862 + 278 = 36140
Step 131: 36140 + 278 = 36418
Step 132: 36418 + 278 = 36696
Step 133: 36696 + 278 = 36974
Step 134: 36974 + 278 = 37252
Step 135: 37252 + 278 = 37530
Step 136: 37530 + 278 = 37808
Step 137: 37808 + 278 = 38086
Step 138: 38086 + 278 = 38364
Step 139: 38364 + 278 = 38642
Step 140: 38642 + 278 = 38920
Step 141: 38920 + 278 = 39198
Step 142: 39198 + 278 = 39476
Step 143: 39476 + 278 = 39754
Step 144: 39754 + 278 = 40032
Step 145: 40032 + 278 = 40310

So, 278*145 = 40310