OK, let's work through this together. We're starting with 953 and we're going to multiply it by 210, which means we add 953 to itself 210 times.
Step 1: 0 + 953 = 953
Step 2: 953 + 953 = 1906
Step 3: 1906 + 953 = 2859
Step 4: 2859 + 953 = 3812
Step 5: 3812 + 953 = 4765
Step 6: 4765 + 953 = 5718
Step 7: 5718 + 953 = 6671
Step 8: 6671 + 953 = 7624
Step 9: 7624 + 953 = 8577
Step 10: 8577 + 953 = 9530
Step 11: 9530 + 953 = 10483
Step 12: 10483 + 953 = 11436
Step 13: 11436 + 953 = 12389
Step 14: 12389 + 953 = 13342
Step 15: 13342 + 953 = 14295
Step 16: 14295 + 953 = 15248
Step 17: 15248 + 953 = 16201
Step 18: 16201 + 953 = 17154
Step 19: 17154 + 953 = 18107
Step 20: 18107 + 953 = 19060
Step 21: 19060 + 953 = 20013
Step 22: 20013 + 953 = 20966
Step 23: 20966 + 953 = 21919
Step 24: 21919 + 953 = 22872
Step 25: 22872 + 953 = 23825
Step 26: 23825 + 953 = 24778
Step 27: 24778 + 953 = 25731
Step 28: 25731 + 953 = 26684
Step 29: 26684 + 953 = 27637
Step 30: 27637 + 953 = 28590
Step 31: 28590 + 953 = 29543
Step 32: 29543 + 953 = 30496
Step 33: 30496 + 953 = 31449
Step 34: 31449 + 953 = 32402
Step 35: 32402 + 953 = 33355
Step 36: 33355 + 953 = 34308
Step 37: 34308 + 953 = 35261
Step 38: 35261 + 953 = 36214
Step 39: 36214 + 953 = 37167
Step 40: 37167 + 953 = 38120
Step 41: 38120 + 953 = 39073
Step 42: 39073 + 953 = 40026
Step 43: 40026 + 953 = 40979
Step 44: 40979 + 953 = 41932
Step 45: 41932 + 953 = 42885
Step 46: 42885 + 953 = 43838
Step 47: 43838 + 953 = 44791
Step 48: 44791 + 953 = 45744
Step 49: 45744 + 953 = 46697
Step 50: 46697 + 953 = 47650
Step 51: 47650 + 953 = 48603
Step 52: 48603 + 953 = 49556
Step 53: 49556 + 953 = 50509
Step 54: 50509 + 953 = 51462
Step 55: 51462 + 953 = 52415
Step 56: 52415 + 953 = 53368
Step 57: 53368 + 953 = 54321
Step 58: 54321 + 953 = 55274
Step 59: 55274 + 953 = 56227
Step 60: 56227 + 953 = 57180
Step 61: 57180 + 953 = 58133
Step 62: 58133 + 953 = 59086
Step 63: 59086 + 953 = 60039
Step 64: 60039 + 953 = 60992
Step 65: 60992 + 953 = 61945
Step 66: 61945 + 953 = 62898
Step 67: 62898 + 953 = 63851
Step 68: 63851 + 953 = 64804
Step 69: 64804 + 953 = 65757
Step 70: 65757 + 953 = 66710
Step 71: 66710 + 953 = 67663
Step 72: 67663 + 953 = 68616
Step 73: 68616 + 953 = 69569
Step 74: 69569 + 953 = 70522
Step 75: 70522 + 953 = 71475
Step 76: 71475 + 953 = 72428
Step 77: 72428 + 953 = 73381
Step 78: 73381 + 953 = 74334
Step 79: 74334 + 953 = 75287
Step 80: 75287 + 953 = 76240
Step 81: 76240 + 953 = 77193
Step 82: 77193 + 953 = 78146
Step 83: 78146 + 953 = 79099
Step 84: 79099 + 953 = 80052
Step 85: 80052 + 953 = 81005
Step 86: 81005 + 953 = 81958
Step 87: 81958 + 953 = 82911
Step 88: 82911 + 953 = 83864
Step 89: 83864 + 953 = 84817
Step 90: 84817 + 953 = 85770
Step 91: 85770 + 953 = 86723
Step 92: 86723 + 953 = 87676
Step 93: 87676 + 953 = 88629
Step 94: 88629 + 953 = 89582
Step 95: 89582 + 953 = 90535
Step 96: 90535 + 953 = 91488
Step 97: 91488 + 953 = 92441
Step 98: 92441 + 953 = 93394
Step 99: 93394 + 953 = 94347
Step 100: 94347 + 953 = 95300
Step 101: 95300 + 953 = 96253
Step 102: 96253 + 953 = 97206
Step 103: 97206 + 953 = 98159
Step 104: 98159 + 953 = 99112
Step 105: 99112 + 953 = 100065
Step 106: 100065 + 953 = 101018
Step 107: 101018 + 953 = 101971
Step 108: 101971 + 953 = 102924
Step 109: 102924 + 953 = 103877
Step 110: 103877 + 953 = 104830
Step 111: 104830 + 953 = 105783
Step 112: 105783 + 953 = 106736
Step 113: 106736 + 953 = 107689
Step 114: 107689 + 953 = 108642
Step 115: 108642 + 953 = 109595
Step 116: 109595 + 953 = 110548
Step 117: 110548 + 953 = 111501
Step 118: 111501 + 953 = 112454
Step 119: 112454 + 953 = 113407
Step 120: 113407 + 953 = 114360
Step 121: 114360 + 953 = 115313
Step 122: 115313 + 953 = 116266
Step 123: 116266 + 953 = 117219
Step 124: 117219 + 953 = 118172
Step 125: 118172 + 953 = 119125
Step 126: 119125 + 953 = 120078
Step 127: 120078 + 953 = 121031
Step 128: 121031 + 953 = 121984
Step 129: 121984 + 953 = 122937
Step 130: 122937 + 953 = 123890
Step 131: 123890 + 953 = 124843
Step 132: 124843 + 953 = 125796
Step 133: 125796 + 953 = 126749
Step 134: 126749 + 953 = 127702
Step 135: 127702 + 953 = 128655
Step 136: 128655 + 953 = 129608
Step 137: 129608 + 953 = 130561
Step 138: 130561 + 953 = 131514
Step 139: 131514 + 953 = 132467
Step 140: 132467 + 953 = 133420
Step 141: 133420 + 953 = 134373
Step 142: 134373 + 953 = 135326
Step 143: 135326 + 953 = 136279
Step 144: 136279 + 953 = 137232
Step 145: 137232 + 953 = 138185
Step 146: 138185 + 953 = 139138
Step 147: 139138 + 953 = 140091
Step 148: 140091 + 953 = 141044
Step 149: 141044 + 953 = 141997
Step 150: 141997 + 953 = 142950
Step 151: 142950 + 953 = 143903
Step 152: 143903 + 953 = 144856
Step 153: 144856 + 953 = 145809
Step 154: 145809 + 953 = 146762
Step 155: 146762 + 953 = 147715
Step 156: 147715 + 953 = 148668
Step 157: 148668 + 953 = 149621
Step 158: 149621 + 953 = 150574
Step 159: 150574 + 953 = 151527
Step 160: 151527 + 953 = 152480
Step 161: 152480 + 953 = 153433
Step 162: 153433 + 953 = 154386
Step 163: 154386 + 953 = 155339
Step 164: 155339 + 953 = 156292
Step 165: 156292 + 953 = 157245
Step 166: 157245 + 953 = 158198
Step 167: 158198 + 953 = 159151
Step 168: 159151 + 953 = 160104
Step 169: 160104 + 953 = 161057
Step 170: 161057 + 953 = 162010
Step 171: 162010 + 953 = 162963
Step 172: 162963 + 953 = 163916
Step 173: 163916 + 953 = 164869
Step 174: 164869 + 953 = 165822
Step 175: 165822 + 953 = 166775
Step 176: 166775 + 953 = 167728
Step 177: 167728 + 953 = 168681
Step 178: 168681 + 953 = 169634
Step 179: 169634 + 953 = 170587
Step 180: 170587 + 953 = 171540
Step 181: 171540 + 953 = 172493
Step 182: 172493 + 953 = 173446
Step 183: 173446 + 953 = 174399
Step 184: 174399 + 953 = 175352
Step 185: 175352 + 953 = 176305
Step 186: 176305 + 953 = 177258
Step 187: 177258 + 953 = 178211
Step 188: 178211 + 953 = 179164
Step 189: 179164 + 953 = 180117
Step 190: 180117 + 953 = 181070
Step 191: 181070 + 953 = 182023
Step 192: 182023 + 953 = 182976
Step 193: 182976 + 953 = 183929
Step 194: 183929 + 953 = 184882
Step 195: 184882 + 953 = 185835
Step 196: 185835 + 953 = 186788
Step 197: 186788 + 953 = 187741
Step 198: 187741 + 953 = 188694
Step 199: 188694 + 953 = 189647
Step 200: 189647 + 953 = 190600
Step 201: 190600 + 953 = 191553
Step 202: 191553 + 953 = 192506
Step 203: 192506 + 953 = 193459
Step 204: 193459 + 953 = 194412
Step 205: 194412 + 953 = 195365
Step 206: 195365 + 953 = 196318
Step 207: 196318 + 953 = 197271
Step 208: 197271 + 953 = 198224
Step 209: 198224 + 953 = 199177
Step 210: 199177 + 953 = 200130

So, 953*210 = 200130