Alright, let's solve this math problem step by step. First, we have the number 31. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 166. So, we're going to take the number 31 and add it to itself 166 times.
Step 1: 0 + 31 = 31
Step 2: 31 + 31 = 62
Step 3: 62 + 31 = 93
Step 4: 93 + 31 = 124
Step 5: 124 + 31 = 155
Step 6: 155 + 31 = 186
Step 7: 186 + 31 = 217
Step 8: 217 + 31 = 248
Step 9: 248 + 31 = 279
Step 10: 279 + 31 = 310
Step 11: 310 + 31 = 341
Step 12: 341 + 31 = 372
Step 13: 372 + 31 = 403
Step 14: 403 + 31 = 434
Step 15: 434 + 31 = 465
Step 16: 465 + 31 = 496
Step 17: 496 + 31 = 527
Step 18: 527 + 31 = 558
Step 19: 558 + 31 = 589
Step 20: 589 + 31 = 620
Step 21: 620 + 31 = 651
Step 22: 651 + 31 = 682
Step 23: 682 + 31 = 713
Step 24: 713 + 31 = 744
Step 25: 744 + 31 = 775
Step 26: 775 + 31 = 806
Step 27: 806 + 31 = 837
Step 28: 837 + 31 = 868
Step 29: 868 + 31 = 899
Step 30: 899 + 31 = 930
Step 31: 930 + 31 = 961
Step 32: 961 + 31 = 992
Step 33: 992 + 31 = 1023
Step 34: 1023 + 31 = 1054
Step 35: 1054 + 31 = 1085
Step 36: 1085 + 31 = 1116
Step 37: 1116 + 31 = 1147
Step 38: 1147 + 31 = 1178
Step 39: 1178 + 31 = 1209
Step 40: 1209 + 31 = 1240
Step 41: 1240 + 31 = 1271
Step 42: 1271 + 31 = 1302
Step 43: 1302 + 31 = 1333
Step 44: 1333 + 31 = 1364
Step 45: 1364 + 31 = 1395
Step 46: 1395 + 31 = 1426
Step 47: 1426 + 31 = 1457
Step 48: 1457 + 31 = 1488
Step 49: 1488 + 31 = 1519
Step 50: 1519 + 31 = 1550
Step 51: 1550 + 31 = 1581
Step 52: 1581 + 31 = 1612
Step 53: 1612 + 31 = 1643
Step 54: 1643 + 31 = 1674
Step 55: 1674 + 31 = 1705
Step 56: 1705 + 31 = 1736
Step 57: 1736 + 31 = 1767
Step 58: 1767 + 31 = 1798
Step 59: 1798 + 31 = 1829
Step 60: 1829 + 31 = 1860
Step 61: 1860 + 31 = 1891
Step 62: 1891 + 31 = 1922
Step 63: 1922 + 31 = 1953
Step 64: 1953 + 31 = 1984
Step 65: 1984 + 31 = 2015
Step 66: 2015 + 31 = 2046
Step 67: 2046 + 31 = 2077
Step 68: 2077 + 31 = 2108
Step 69: 2108 + 31 = 2139
Step 70: 2139 + 31 = 2170
Step 71: 2170 + 31 = 2201
Step 72: 2201 + 31 = 2232
Step 73: 2232 + 31 = 2263
Step 74: 2263 + 31 = 2294
Step 75: 2294 + 31 = 2325
Step 76: 2325 + 31 = 2356
Step 77: 2356 + 31 = 2387
Step 78: 2387 + 31 = 2418
Step 79: 2418 + 31 = 2449
Step 80: 2449 + 31 = 2480
Step 81: 2480 + 31 = 2511
Step 82: 2511 + 31 = 2542
Step 83: 2542 + 31 = 2573
Step 84: 2573 + 31 = 2604
Step 85: 2604 + 31 = 2635
Step 86: 2635 + 31 = 2666
Step 87: 2666 + 31 = 2697
Step 88: 2697 + 31 = 2728
Step 89: 2728 + 31 = 2759
Step 90: 2759 + 31 = 2790
Step 91: 2790 + 31 = 2821
Step 92: 2821 + 31 = 2852
Step 93: 2852 + 31 = 2883
Step 94: 2883 + 31 = 2914
Step 95: 2914 + 31 = 2945
Step 96: 2945 + 31 = 2976
Step 97: 2976 + 31 = 3007
Step 98: 3007 + 31 = 3038
Step 99: 3038 + 31 = 3069
Step 100: 3069 + 31 = 3100
Step 101: 3100 + 31 = 3131
Step 102: 3131 + 31 = 3162
Step 103: 3162 + 31 = 3193
Step 104: 3193 + 31 = 3224
Step 105: 3224 + 31 = 3255
Step 106: 3255 + 31 = 3286
Step 107: 3286 + 31 = 3317
Step 108: 3317 + 31 = 3348
Step 109: 3348 + 31 = 3379
Step 110: 3379 + 31 = 3410
Step 111: 3410 + 31 = 3441
Step 112: 3441 + 31 = 3472
Step 113: 3472 + 31 = 3503
Step 114: 3503 + 31 = 3534
Step 115: 3534 + 31 = 3565
Step 116: 3565 + 31 = 3596
Step 117: 3596 + 31 = 3627
Step 118: 3627 + 31 = 3658
Step 119: 3658 + 31 = 3689
Step 120: 3689 + 31 = 3720
Step 121: 3720 + 31 = 3751
Step 122: 3751 + 31 = 3782
Step 123: 3782 + 31 = 3813
Step 124: 3813 + 31 = 3844
Step 125: 3844 + 31 = 3875
Step 126: 3875 + 31 = 3906
Step 127: 3906 + 31 = 3937
Step 128: 3937 + 31 = 3968
Step 129: 3968 + 31 = 3999
Step 130: 3999 + 31 = 4030
Step 131: 4030 + 31 = 4061
Step 132: 4061 + 31 = 4092
Step 133: 4092 + 31 = 4123
Step 134: 4123 + 31 = 4154
Step 135: 4154 + 31 = 4185
Step 136: 4185 + 31 = 4216
Step 137: 4216 + 31 = 4247
Step 138: 4247 + 31 = 4278
Step 139: 4278 + 31 = 4309
Step 140: 4309 + 31 = 4340
Step 141: 4340 + 31 = 4371
Step 142: 4371 + 31 = 4402
Step 143: 4402 + 31 = 4433
Step 144: 4433 + 31 = 4464
Step 145: 4464 + 31 = 4495
Step 146: 4495 + 31 = 4526
Step 147: 4526 + 31 = 4557
Step 148: 4557 + 31 = 4588
Step 149: 4588 + 31 = 4619
Step 150: 4619 + 31 = 4650
Step 151: 4650 + 31 = 4681
Step 152: 4681 + 31 = 4712
Step 153: 4712 + 31 = 4743
Step 154: 4743 + 31 = 4774
Step 155: 4774 + 31 = 4805
Step 156: 4805 + 31 = 4836
Step 157: 4836 + 31 = 4867
Step 158: 4867 + 31 = 4898
Step 159: 4898 + 31 = 4929
Step 160: 4929 + 31 = 4960
Step 161: 4960 + 31 = 4991
Step 162: 4991 + 31 = 5022
Step 163: 5022 + 31 = 5053
Step 164: 5053 + 31 = 5084
Step 165: 5084 + 31 = 5115
Step 166: 5115 + 31 = 5146

So, 31*166 = 5146