Let's get this math done. We have 124 and we're going to multiply it by 207. This is the same as taking 124 and adding it to itself 207 times.
Step 1: 0 + 124 = 124
Step 2: 124 + 124 = 248
Step 3: 248 + 124 = 372
Step 4: 372 + 124 = 496
Step 5: 496 + 124 = 620
Step 6: 620 + 124 = 744
Step 7: 744 + 124 = 868
Step 8: 868 + 124 = 992
Step 9: 992 + 124 = 1116
Step 10: 1116 + 124 = 1240
Step 11: 1240 + 124 = 1364
Step 12: 1364 + 124 = 1488
Step 13: 1488 + 124 = 1612
Step 14: 1612 + 124 = 1736
Step 15: 1736 + 124 = 1860
Step 16: 1860 + 124 = 1984
Step 17: 1984 + 124 = 2108
Step 18: 2108 + 124 = 2232
Step 19: 2232 + 124 = 2356
Step 20: 2356 + 124 = 2480
Step 21: 2480 + 124 = 2604
Step 22: 2604 + 124 = 2728
Step 23: 2728 + 124 = 2852
Step 24: 2852 + 124 = 2976
Step 25: 2976 + 124 = 3100
Step 26: 3100 + 124 = 3224
Step 27: 3224 + 124 = 3348
Step 28: 3348 + 124 = 3472
Step 29: 3472 + 124 = 3596
Step 30: 3596 + 124 = 3720
Step 31: 3720 + 124 = 3844
Step 32: 3844 + 124 = 3968
Step 33: 3968 + 124 = 4092
Step 34: 4092 + 124 = 4216
Step 35: 4216 + 124 = 4340
Step 36: 4340 + 124 = 4464
Step 37: 4464 + 124 = 4588
Step 38: 4588 + 124 = 4712
Step 39: 4712 + 124 = 4836
Step 40: 4836 + 124 = 4960
Step 41: 4960 + 124 = 5084
Step 42: 5084 + 124 = 5208
Step 43: 5208 + 124 = 5332
Step 44: 5332 + 124 = 5456
Step 45: 5456 + 124 = 5580
Step 46: 5580 + 124 = 5704
Step 47: 5704 + 124 = 5828
Step 48: 5828 + 124 = 5952
Step 49: 5952 + 124 = 6076
Step 50: 6076 + 124 = 6200
Step 51: 6200 + 124 = 6324
Step 52: 6324 + 124 = 6448
Step 53: 6448 + 124 = 6572
Step 54: 6572 + 124 = 6696
Step 55: 6696 + 124 = 6820
Step 56: 6820 + 124 = 6944
Step 57: 6944 + 124 = 7068
Step 58: 7068 + 124 = 7192
Step 59: 7192 + 124 = 7316
Step 60: 7316 + 124 = 7440
Step 61: 7440 + 124 = 7564
Step 62: 7564 + 124 = 7688
Step 63: 7688 + 124 = 7812
Step 64: 7812 + 124 = 7936
Step 65: 7936 + 124 = 8060
Step 66: 8060 + 124 = 8184
Step 67: 8184 + 124 = 8308
Step 68: 8308 + 124 = 8432
Step 69: 8432 + 124 = 8556
Step 70: 8556 + 124 = 8680
Step 71: 8680 + 124 = 8804
Step 72: 8804 + 124 = 8928
Step 73: 8928 + 124 = 9052
Step 74: 9052 + 124 = 9176
Step 75: 9176 + 124 = 9300
Step 76: 9300 + 124 = 9424
Step 77: 9424 + 124 = 9548
Step 78: 9548 + 124 = 9672
Step 79: 9672 + 124 = 9796
Step 80: 9796 + 124 = 9920
Step 81: 9920 + 124 = 10044
Step 82: 10044 + 124 = 10168
Step 83: 10168 + 124 = 10292
Step 84: 10292 + 124 = 10416
Step 85: 10416 + 124 = 10540
Step 86: 10540 + 124 = 10664
Step 87: 10664 + 124 = 10788
Step 88: 10788 + 124 = 10912
Step 89: 10912 + 124 = 11036
Step 90: 11036 + 124 = 11160
Step 91: 11160 + 124 = 11284
Step 92: 11284 + 124 = 11408
Step 93: 11408 + 124 = 11532
Step 94: 11532 + 124 = 11656
Step 95: 11656 + 124 = 11780
Step 96: 11780 + 124 = 11904
Step 97: 11904 + 124 = 12028
Step 98: 12028 + 124 = 12152
Step 99: 12152 + 124 = 12276
Step 100: 12276 + 124 = 12400
Step 101: 12400 + 124 = 12524
Step 102: 12524 + 124 = 12648
Step 103: 12648 + 124 = 12772
Step 104: 12772 + 124 = 12896
Step 105: 12896 + 124 = 13020
Step 106: 13020 + 124 = 13144
Step 107: 13144 + 124 = 13268
Step 108: 13268 + 124 = 13392
Step 109: 13392 + 124 = 13516
Step 110: 13516 + 124 = 13640
Step 111: 13640 + 124 = 13764
Step 112: 13764 + 124 = 13888
Step 113: 13888 + 124 = 14012
Step 114: 14012 + 124 = 14136
Step 115: 14136 + 124 = 14260
Step 116: 14260 + 124 = 14384
Step 117: 14384 + 124 = 14508
Step 118: 14508 + 124 = 14632
Step 119: 14632 + 124 = 14756
Step 120: 14756 + 124 = 14880
Step 121: 14880 + 124 = 15004
Step 122: 15004 + 124 = 15128
Step 123: 15128 + 124 = 15252
Step 124: 15252 + 124 = 15376
Step 125: 15376 + 124 = 15500
Step 126: 15500 + 124 = 15624
Step 127: 15624 + 124 = 15748
Step 128: 15748 + 124 = 15872
Step 129: 15872 + 124 = 15996
Step 130: 15996 + 124 = 16120
Step 131: 16120 + 124 = 16244
Step 132: 16244 + 124 = 16368
Step 133: 16368 + 124 = 16492
Step 134: 16492 + 124 = 16616
Step 135: 16616 + 124 = 16740
Step 136: 16740 + 124 = 16864
Step 137: 16864 + 124 = 16988
Step 138: 16988 + 124 = 17112
Step 139: 17112 + 124 = 17236
Step 140: 17236 + 124 = 17360
Step 141: 17360 + 124 = 17484
Step 142: 17484 + 124 = 17608
Step 143: 17608 + 124 = 17732
Step 144: 17732 + 124 = 17856
Step 145: 17856 + 124 = 17980
Step 146: 17980 + 124 = 18104
Step 147: 18104 + 124 = 18228
Step 148: 18228 + 124 = 18352
Step 149: 18352 + 124 = 18476
Step 150: 18476 + 124 = 18600
Step 151: 18600 + 124 = 18724
Step 152: 18724 + 124 = 18848
Step 153: 18848 + 124 = 18972
Step 154: 18972 + 124 = 19096
Step 155: 19096 + 124 = 19220
Step 156: 19220 + 124 = 19344
Step 157: 19344 + 124 = 19468
Step 158: 19468 + 124 = 19592
Step 159: 19592 + 124 = 19716
Step 160: 19716 + 124 = 19840
Step 161: 19840 + 124 = 19964
Step 162: 19964 + 124 = 20088
Step 163: 20088 + 124 = 20212
Step 164: 20212 + 124 = 20336
Step 165: 20336 + 124 = 20460
Step 166: 20460 + 124 = 20584
Step 167: 20584 + 124 = 20708
Step 168: 20708 + 124 = 20832
Step 169: 20832 + 124 = 20956
Step 170: 20956 + 124 = 21080
Step 171: 21080 + 124 = 21204
Step 172: 21204 + 124 = 21328
Step 173: 21328 + 124 = 21452
Step 174: 21452 + 124 = 21576
Step 175: 21576 + 124 = 21700
Step 176: 21700 + 124 = 21824
Step 177: 21824 + 124 = 21948
Step 178: 21948 + 124 = 22072
Step 179: 22072 + 124 = 22196
Step 180: 22196 + 124 = 22320
Step 181: 22320 + 124 = 22444
Step 182: 22444 + 124 = 22568
Step 183: 22568 + 124 = 22692
Step 184: 22692 + 124 = 22816
Step 185: 22816 + 124 = 22940
Step 186: 22940 + 124 = 23064
Step 187: 23064 + 124 = 23188
Step 188: 23188 + 124 = 23312
Step 189: 23312 + 124 = 23436
Step 190: 23436 + 124 = 23560
Step 191: 23560 + 124 = 23684
Step 192: 23684 + 124 = 23808
Step 193: 23808 + 124 = 23932
Step 194: 23932 + 124 = 24056
Step 195: 24056 + 124 = 24180
Step 196: 24180 + 124 = 24304
Step 197: 24304 + 124 = 24428
Step 198: 24428 + 124 = 24552
Step 199: 24552 + 124 = 24676
Step 200: 24676 + 124 = 24800
Step 201: 24800 + 124 = 24924
Step 202: 24924 + 124 = 25048
Step 203: 25048 + 124 = 25172
Step 204: 25172 + 124 = 25296
Step 205: 25296 + 124 = 25420
Step 206: 25420 + 124 = 25544
Step 207: 25544 + 124 = 25668

So, 124*207 = 25668