Let's roll up our sleeves and solve this. We have 166 and we're going to multiply it by 117, essentially adding 166 to itself 117 times.
Step 1: 0 + 166 = 166
Step 2: 166 + 166 = 332
Step 3: 332 + 166 = 498
Step 4: 498 + 166 = 664
Step 5: 664 + 166 = 830
Step 6: 830 + 166 = 996
Step 7: 996 + 166 = 1162
Step 8: 1162 + 166 = 1328
Step 9: 1328 + 166 = 1494
Step 10: 1494 + 166 = 1660
Step 11: 1660 + 166 = 1826
Step 12: 1826 + 166 = 1992
Step 13: 1992 + 166 = 2158
Step 14: 2158 + 166 = 2324
Step 15: 2324 + 166 = 2490
Step 16: 2490 + 166 = 2656
Step 17: 2656 + 166 = 2822
Step 18: 2822 + 166 = 2988
Step 19: 2988 + 166 = 3154
Step 20: 3154 + 166 = 3320
Step 21: 3320 + 166 = 3486
Step 22: 3486 + 166 = 3652
Step 23: 3652 + 166 = 3818
Step 24: 3818 + 166 = 3984
Step 25: 3984 + 166 = 4150
Step 26: 4150 + 166 = 4316
Step 27: 4316 + 166 = 4482
Step 28: 4482 + 166 = 4648
Step 29: 4648 + 166 = 4814
Step 30: 4814 + 166 = 4980
Step 31: 4980 + 166 = 5146
Step 32: 5146 + 166 = 5312
Step 33: 5312 + 166 = 5478
Step 34: 5478 + 166 = 5644
Step 35: 5644 + 166 = 5810
Step 36: 5810 + 166 = 5976
Step 37: 5976 + 166 = 6142
Step 38: 6142 + 166 = 6308
Step 39: 6308 + 166 = 6474
Step 40: 6474 + 166 = 6640
Step 41: 6640 + 166 = 6806
Step 42: 6806 + 166 = 6972
Step 43: 6972 + 166 = 7138
Step 44: 7138 + 166 = 7304
Step 45: 7304 + 166 = 7470
Step 46: 7470 + 166 = 7636
Step 47: 7636 + 166 = 7802
Step 48: 7802 + 166 = 7968
Step 49: 7968 + 166 = 8134
Step 50: 8134 + 166 = 8300
Step 51: 8300 + 166 = 8466
Step 52: 8466 + 166 = 8632
Step 53: 8632 + 166 = 8798
Step 54: 8798 + 166 = 8964
Step 55: 8964 + 166 = 9130
Step 56: 9130 + 166 = 9296
Step 57: 9296 + 166 = 9462
Step 58: 9462 + 166 = 9628
Step 59: 9628 + 166 = 9794
Step 60: 9794 + 166 = 9960
Step 61: 9960 + 166 = 10126
Step 62: 10126 + 166 = 10292
Step 63: 10292 + 166 = 10458
Step 64: 10458 + 166 = 10624
Step 65: 10624 + 166 = 10790
Step 66: 10790 + 166 = 10956
Step 67: 10956 + 166 = 11122
Step 68: 11122 + 166 = 11288
Step 69: 11288 + 166 = 11454
Step 70: 11454 + 166 = 11620
Step 71: 11620 + 166 = 11786
Step 72: 11786 + 166 = 11952
Step 73: 11952 + 166 = 12118
Step 74: 12118 + 166 = 12284
Step 75: 12284 + 166 = 12450
Step 76: 12450 + 166 = 12616
Step 77: 12616 + 166 = 12782
Step 78: 12782 + 166 = 12948
Step 79: 12948 + 166 = 13114
Step 80: 13114 + 166 = 13280
Step 81: 13280 + 166 = 13446
Step 82: 13446 + 166 = 13612
Step 83: 13612 + 166 = 13778
Step 84: 13778 + 166 = 13944
Step 85: 13944 + 166 = 14110
Step 86: 14110 + 166 = 14276
Step 87: 14276 + 166 = 14442
Step 88: 14442 + 166 = 14608
Step 89: 14608 + 166 = 14774
Step 90: 14774 + 166 = 14940
Step 91: 14940 + 166 = 15106
Step 92: 15106 + 166 = 15272
Step 93: 15272 + 166 = 15438
Step 94: 15438 + 166 = 15604
Step 95: 15604 + 166 = 15770
Step 96: 15770 + 166 = 15936
Step 97: 15936 + 166 = 16102
Step 98: 16102 + 166 = 16268
Step 99: 16268 + 166 = 16434
Step 100: 16434 + 166 = 16600
Step 101: 16600 + 166 = 16766
Step 102: 16766 + 166 = 16932
Step 103: 16932 + 166 = 17098
Step 104: 17098 + 166 = 17264
Step 105: 17264 + 166 = 17430
Step 106: 17430 + 166 = 17596
Step 107: 17596 + 166 = 17762
Step 108: 17762 + 166 = 17928
Step 109: 17928 + 166 = 18094
Step 110: 18094 + 166 = 18260
Step 111: 18260 + 166 = 18426
Step 112: 18426 + 166 = 18592
Step 113: 18592 + 166 = 18758
Step 114: 18758 + 166 = 18924
Step 115: 18924 + 166 = 19090
Step 116: 19090 + 166 = 19256
Step 117: 19256 + 166 = 19422

So, 166*117 = 19422