OK, let's work through this together. We're starting with 853 and we're going to multiply it by 177, which means we add 853 to itself 177 times.
Step 1: 0 + 853 = 853
Step 2: 853 + 853 = 1706
Step 3: 1706 + 853 = 2559
Step 4: 2559 + 853 = 3412
Step 5: 3412 + 853 = 4265
Step 6: 4265 + 853 = 5118
Step 7: 5118 + 853 = 5971
Step 8: 5971 + 853 = 6824
Step 9: 6824 + 853 = 7677
Step 10: 7677 + 853 = 8530
Step 11: 8530 + 853 = 9383
Step 12: 9383 + 853 = 10236
Step 13: 10236 + 853 = 11089
Step 14: 11089 + 853 = 11942
Step 15: 11942 + 853 = 12795
Step 16: 12795 + 853 = 13648
Step 17: 13648 + 853 = 14501
Step 18: 14501 + 853 = 15354
Step 19: 15354 + 853 = 16207
Step 20: 16207 + 853 = 17060
Step 21: 17060 + 853 = 17913
Step 22: 17913 + 853 = 18766
Step 23: 18766 + 853 = 19619
Step 24: 19619 + 853 = 20472
Step 25: 20472 + 853 = 21325
Step 26: 21325 + 853 = 22178
Step 27: 22178 + 853 = 23031
Step 28: 23031 + 853 = 23884
Step 29: 23884 + 853 = 24737
Step 30: 24737 + 853 = 25590
Step 31: 25590 + 853 = 26443
Step 32: 26443 + 853 = 27296
Step 33: 27296 + 853 = 28149
Step 34: 28149 + 853 = 29002
Step 35: 29002 + 853 = 29855
Step 36: 29855 + 853 = 30708
Step 37: 30708 + 853 = 31561
Step 38: 31561 + 853 = 32414
Step 39: 32414 + 853 = 33267
Step 40: 33267 + 853 = 34120
Step 41: 34120 + 853 = 34973
Step 42: 34973 + 853 = 35826
Step 43: 35826 + 853 = 36679
Step 44: 36679 + 853 = 37532
Step 45: 37532 + 853 = 38385
Step 46: 38385 + 853 = 39238
Step 47: 39238 + 853 = 40091
Step 48: 40091 + 853 = 40944
Step 49: 40944 + 853 = 41797
Step 50: 41797 + 853 = 42650
Step 51: 42650 + 853 = 43503
Step 52: 43503 + 853 = 44356
Step 53: 44356 + 853 = 45209
Step 54: 45209 + 853 = 46062
Step 55: 46062 + 853 = 46915
Step 56: 46915 + 853 = 47768
Step 57: 47768 + 853 = 48621
Step 58: 48621 + 853 = 49474
Step 59: 49474 + 853 = 50327
Step 60: 50327 + 853 = 51180
Step 61: 51180 + 853 = 52033
Step 62: 52033 + 853 = 52886
Step 63: 52886 + 853 = 53739
Step 64: 53739 + 853 = 54592
Step 65: 54592 + 853 = 55445
Step 66: 55445 + 853 = 56298
Step 67: 56298 + 853 = 57151
Step 68: 57151 + 853 = 58004
Step 69: 58004 + 853 = 58857
Step 70: 58857 + 853 = 59710
Step 71: 59710 + 853 = 60563
Step 72: 60563 + 853 = 61416
Step 73: 61416 + 853 = 62269
Step 74: 62269 + 853 = 63122
Step 75: 63122 + 853 = 63975
Step 76: 63975 + 853 = 64828
Step 77: 64828 + 853 = 65681
Step 78: 65681 + 853 = 66534
Step 79: 66534 + 853 = 67387
Step 80: 67387 + 853 = 68240
Step 81: 68240 + 853 = 69093
Step 82: 69093 + 853 = 69946
Step 83: 69946 + 853 = 70799
Step 84: 70799 + 853 = 71652
Step 85: 71652 + 853 = 72505
Step 86: 72505 + 853 = 73358
Step 87: 73358 + 853 = 74211
Step 88: 74211 + 853 = 75064
Step 89: 75064 + 853 = 75917
Step 90: 75917 + 853 = 76770
Step 91: 76770 + 853 = 77623
Step 92: 77623 + 853 = 78476
Step 93: 78476 + 853 = 79329
Step 94: 79329 + 853 = 80182
Step 95: 80182 + 853 = 81035
Step 96: 81035 + 853 = 81888
Step 97: 81888 + 853 = 82741
Step 98: 82741 + 853 = 83594
Step 99: 83594 + 853 = 84447
Step 100: 84447 + 853 = 85300
Step 101: 85300 + 853 = 86153
Step 102: 86153 + 853 = 87006
Step 103: 87006 + 853 = 87859
Step 104: 87859 + 853 = 88712
Step 105: 88712 + 853 = 89565
Step 106: 89565 + 853 = 90418
Step 107: 90418 + 853 = 91271
Step 108: 91271 + 853 = 92124
Step 109: 92124 + 853 = 92977
Step 110: 92977 + 853 = 93830
Step 111: 93830 + 853 = 94683
Step 112: 94683 + 853 = 95536
Step 113: 95536 + 853 = 96389
Step 114: 96389 + 853 = 97242
Step 115: 97242 + 853 = 98095
Step 116: 98095 + 853 = 98948
Step 117: 98948 + 853 = 99801
Step 118: 99801 + 853 = 100654
Step 119: 100654 + 853 = 101507
Step 120: 101507 + 853 = 102360
Step 121: 102360 + 853 = 103213
Step 122: 103213 + 853 = 104066
Step 123: 104066 + 853 = 104919
Step 124: 104919 + 853 = 105772
Step 125: 105772 + 853 = 106625
Step 126: 106625 + 853 = 107478
Step 127: 107478 + 853 = 108331
Step 128: 108331 + 853 = 109184
Step 129: 109184 + 853 = 110037
Step 130: 110037 + 853 = 110890
Step 131: 110890 + 853 = 111743
Step 132: 111743 + 853 = 112596
Step 133: 112596 + 853 = 113449
Step 134: 113449 + 853 = 114302
Step 135: 114302 + 853 = 115155
Step 136: 115155 + 853 = 116008
Step 137: 116008 + 853 = 116861
Step 138: 116861 + 853 = 117714
Step 139: 117714 + 853 = 118567
Step 140: 118567 + 853 = 119420
Step 141: 119420 + 853 = 120273
Step 142: 120273 + 853 = 121126
Step 143: 121126 + 853 = 121979
Step 144: 121979 + 853 = 122832
Step 145: 122832 + 853 = 123685
Step 146: 123685 + 853 = 124538
Step 147: 124538 + 853 = 125391
Step 148: 125391 + 853 = 126244
Step 149: 126244 + 853 = 127097
Step 150: 127097 + 853 = 127950
Step 151: 127950 + 853 = 128803
Step 152: 128803 + 853 = 129656
Step 153: 129656 + 853 = 130509
Step 154: 130509 + 853 = 131362
Step 155: 131362 + 853 = 132215
Step 156: 132215 + 853 = 133068
Step 157: 133068 + 853 = 133921
Step 158: 133921 + 853 = 134774
Step 159: 134774 + 853 = 135627
Step 160: 135627 + 853 = 136480
Step 161: 136480 + 853 = 137333
Step 162: 137333 + 853 = 138186
Step 163: 138186 + 853 = 139039
Step 164: 139039 + 853 = 139892
Step 165: 139892 + 853 = 140745
Step 166: 140745 + 853 = 141598
Step 167: 141598 + 853 = 142451
Step 168: 142451 + 853 = 143304
Step 169: 143304 + 853 = 144157
Step 170: 144157 + 853 = 145010
Step 171: 145010 + 853 = 145863
Step 172: 145863 + 853 = 146716
Step 173: 146716 + 853 = 147569
Step 174: 147569 + 853 = 148422
Step 175: 148422 + 853 = 149275
Step 176: 149275 + 853 = 150128
Step 177: 150128 + 853 = 150981

So, 853*177 = 150981