Sure thing, let's get straight to it. We start with 964 and we're going to multiply it by 255, which means adding 964 to itself 255 times.
Step 1: 0 + 964 = 964
Step 2: 964 + 964 = 1928
Step 3: 1928 + 964 = 2892
Step 4: 2892 + 964 = 3856
Step 5: 3856 + 964 = 4820
Step 6: 4820 + 964 = 5784
Step 7: 5784 + 964 = 6748
Step 8: 6748 + 964 = 7712
Step 9: 7712 + 964 = 8676
Step 10: 8676 + 964 = 9640
Step 11: 9640 + 964 = 10604
Step 12: 10604 + 964 = 11568
Step 13: 11568 + 964 = 12532
Step 14: 12532 + 964 = 13496
Step 15: 13496 + 964 = 14460
Step 16: 14460 + 964 = 15424
Step 17: 15424 + 964 = 16388
Step 18: 16388 + 964 = 17352
Step 19: 17352 + 964 = 18316
Step 20: 18316 + 964 = 19280
Step 21: 19280 + 964 = 20244
Step 22: 20244 + 964 = 21208
Step 23: 21208 + 964 = 22172
Step 24: 22172 + 964 = 23136
Step 25: 23136 + 964 = 24100
Step 26: 24100 + 964 = 25064
Step 27: 25064 + 964 = 26028
Step 28: 26028 + 964 = 26992
Step 29: 26992 + 964 = 27956
Step 30: 27956 + 964 = 28920
Step 31: 28920 + 964 = 29884
Step 32: 29884 + 964 = 30848
Step 33: 30848 + 964 = 31812
Step 34: 31812 + 964 = 32776
Step 35: 32776 + 964 = 33740
Step 36: 33740 + 964 = 34704
Step 37: 34704 + 964 = 35668
Step 38: 35668 + 964 = 36632
Step 39: 36632 + 964 = 37596
Step 40: 37596 + 964 = 38560
Step 41: 38560 + 964 = 39524
Step 42: 39524 + 964 = 40488
Step 43: 40488 + 964 = 41452
Step 44: 41452 + 964 = 42416
Step 45: 42416 + 964 = 43380
Step 46: 43380 + 964 = 44344
Step 47: 44344 + 964 = 45308
Step 48: 45308 + 964 = 46272
Step 49: 46272 + 964 = 47236
Step 50: 47236 + 964 = 48200
Step 51: 48200 + 964 = 49164
Step 52: 49164 + 964 = 50128
Step 53: 50128 + 964 = 51092
Step 54: 51092 + 964 = 52056
Step 55: 52056 + 964 = 53020
Step 56: 53020 + 964 = 53984
Step 57: 53984 + 964 = 54948
Step 58: 54948 + 964 = 55912
Step 59: 55912 + 964 = 56876
Step 60: 56876 + 964 = 57840
Step 61: 57840 + 964 = 58804
Step 62: 58804 + 964 = 59768
Step 63: 59768 + 964 = 60732
Step 64: 60732 + 964 = 61696
Step 65: 61696 + 964 = 62660
Step 66: 62660 + 964 = 63624
Step 67: 63624 + 964 = 64588
Step 68: 64588 + 964 = 65552
Step 69: 65552 + 964 = 66516
Step 70: 66516 + 964 = 67480
Step 71: 67480 + 964 = 68444
Step 72: 68444 + 964 = 69408
Step 73: 69408 + 964 = 70372
Step 74: 70372 + 964 = 71336
Step 75: 71336 + 964 = 72300
Step 76: 72300 + 964 = 73264
Step 77: 73264 + 964 = 74228
Step 78: 74228 + 964 = 75192
Step 79: 75192 + 964 = 76156
Step 80: 76156 + 964 = 77120
Step 81: 77120 + 964 = 78084
Step 82: 78084 + 964 = 79048
Step 83: 79048 + 964 = 80012
Step 84: 80012 + 964 = 80976
Step 85: 80976 + 964 = 81940
Step 86: 81940 + 964 = 82904
Step 87: 82904 + 964 = 83868
Step 88: 83868 + 964 = 84832
Step 89: 84832 + 964 = 85796
Step 90: 85796 + 964 = 86760
Step 91: 86760 + 964 = 87724
Step 92: 87724 + 964 = 88688
Step 93: 88688 + 964 = 89652
Step 94: 89652 + 964 = 90616
Step 95: 90616 + 964 = 91580
Step 96: 91580 + 964 = 92544
Step 97: 92544 + 964 = 93508
Step 98: 93508 + 964 = 94472
Step 99: 94472 + 964 = 95436
Step 100: 95436 + 964 = 96400
Step 101: 96400 + 964 = 97364
Step 102: 97364 + 964 = 98328
Step 103: 98328 + 964 = 99292
Step 104: 99292 + 964 = 100256
Step 105: 100256 + 964 = 101220
Step 106: 101220 + 964 = 102184
Step 107: 102184 + 964 = 103148
Step 108: 103148 + 964 = 104112
Step 109: 104112 + 964 = 105076
Step 110: 105076 + 964 = 106040
Step 111: 106040 + 964 = 107004
Step 112: 107004 + 964 = 107968
Step 113: 107968 + 964 = 108932
Step 114: 108932 + 964 = 109896
Step 115: 109896 + 964 = 110860
Step 116: 110860 + 964 = 111824
Step 117: 111824 + 964 = 112788
Step 118: 112788 + 964 = 113752
Step 119: 113752 + 964 = 114716
Step 120: 114716 + 964 = 115680
Step 121: 115680 + 964 = 116644
Step 122: 116644 + 964 = 117608
Step 123: 117608 + 964 = 118572
Step 124: 118572 + 964 = 119536
Step 125: 119536 + 964 = 120500
Step 126: 120500 + 964 = 121464
Step 127: 121464 + 964 = 122428
Step 128: 122428 + 964 = 123392
Step 129: 123392 + 964 = 124356
Step 130: 124356 + 964 = 125320
Step 131: 125320 + 964 = 126284
Step 132: 126284 + 964 = 127248
Step 133: 127248 + 964 = 128212
Step 134: 128212 + 964 = 129176
Step 135: 129176 + 964 = 130140
Step 136: 130140 + 964 = 131104
Step 137: 131104 + 964 = 132068
Step 138: 132068 + 964 = 133032
Step 139: 133032 + 964 = 133996
Step 140: 133996 + 964 = 134960
Step 141: 134960 + 964 = 135924
Step 142: 135924 + 964 = 136888
Step 143: 136888 + 964 = 137852
Step 144: 137852 + 964 = 138816
Step 145: 138816 + 964 = 139780
Step 146: 139780 + 964 = 140744
Step 147: 140744 + 964 = 141708
Step 148: 141708 + 964 = 142672
Step 149: 142672 + 964 = 143636
Step 150: 143636 + 964 = 144600
Step 151: 144600 + 964 = 145564
Step 152: 145564 + 964 = 146528
Step 153: 146528 + 964 = 147492
Step 154: 147492 + 964 = 148456
Step 155: 148456 + 964 = 149420
Step 156: 149420 + 964 = 150384
Step 157: 150384 + 964 = 151348
Step 158: 151348 + 964 = 152312
Step 159: 152312 + 964 = 153276
Step 160: 153276 + 964 = 154240
Step 161: 154240 + 964 = 155204
Step 162: 155204 + 964 = 156168
Step 163: 156168 + 964 = 157132
Step 164: 157132 + 964 = 158096
Step 165: 158096 + 964 = 159060
Step 166: 159060 + 964 = 160024
Step 167: 160024 + 964 = 160988
Step 168: 160988 + 964 = 161952
Step 169: 161952 + 964 = 162916
Step 170: 162916 + 964 = 163880
Step 171: 163880 + 964 = 164844
Step 172: 164844 + 964 = 165808
Step 173: 165808 + 964 = 166772
Step 174: 166772 + 964 = 167736
Step 175: 167736 + 964 = 168700
Step 176: 168700 + 964 = 169664
Step 177: 169664 + 964 = 170628
Step 178: 170628 + 964 = 171592
Step 179: 171592 + 964 = 172556
Step 180: 172556 + 964 = 173520
Step 181: 173520 + 964 = 174484
Step 182: 174484 + 964 = 175448
Step 183: 175448 + 964 = 176412
Step 184: 176412 + 964 = 177376
Step 185: 177376 + 964 = 178340
Step 186: 178340 + 964 = 179304
Step 187: 179304 + 964 = 180268
Step 188: 180268 + 964 = 181232
Step 189: 181232 + 964 = 182196
Step 190: 182196 + 964 = 183160
Step 191: 183160 + 964 = 184124
Step 192: 184124 + 964 = 185088
Step 193: 185088 + 964 = 186052
Step 194: 186052 + 964 = 187016
Step 195: 187016 + 964 = 187980
Step 196: 187980 + 964 = 188944
Step 197: 188944 + 964 = 189908
Step 198: 189908 + 964 = 190872
Step 199: 190872 + 964 = 191836
Step 200: 191836 + 964 = 192800
Step 201: 192800 + 964 = 193764
Step 202: 193764 + 964 = 194728
Step 203: 194728 + 964 = 195692
Step 204: 195692 + 964 = 196656
Step 205: 196656 + 964 = 197620
Step 206: 197620 + 964 = 198584
Step 207: 198584 + 964 = 199548
Step 208: 199548 + 964 = 200512
Step 209: 200512 + 964 = 201476
Step 210: 201476 + 964 = 202440
Step 211: 202440 + 964 = 203404
Step 212: 203404 + 964 = 204368
Step 213: 204368 + 964 = 205332
Step 214: 205332 + 964 = 206296
Step 215: 206296 + 964 = 207260
Step 216: 207260 + 964 = 208224
Step 217: 208224 + 964 = 209188
Step 218: 209188 + 964 = 210152
Step 219: 210152 + 964 = 211116
Step 220: 211116 + 964 = 212080
Step 221: 212080 + 964 = 213044
Step 222: 213044 + 964 = 214008
Step 223: 214008 + 964 = 214972
Step 224: 214972 + 964 = 215936
Step 225: 215936 + 964 = 216900
Step 226: 216900 + 964 = 217864
Step 227: 217864 + 964 = 218828
Step 228: 218828 + 964 = 219792
Step 229: 219792 + 964 = 220756
Step 230: 220756 + 964 = 221720
Step 231: 221720 + 964 = 222684
Step 232: 222684 + 964 = 223648
Step 233: 223648 + 964 = 224612
Step 234: 224612 + 964 = 225576
Step 235: 225576 + 964 = 226540
Step 236: 226540 + 964 = 227504
Step 237: 227504 + 964 = 228468
Step 238: 228468 + 964 = 229432
Step 239: 229432 + 964 = 230396
Step 240: 230396 + 964 = 231360
Step 241: 231360 + 964 = 232324
Step 242: 232324 + 964 = 233288
Step 243: 233288 + 964 = 234252
Step 244: 234252 + 964 = 235216
Step 245: 235216 + 964 = 236180
Step 246: 236180 + 964 = 237144
Step 247: 237144 + 964 = 238108
Step 248: 238108 + 964 = 239072
Step 249: 239072 + 964 = 240036
Step 250: 240036 + 964 = 241000
Step 251: 241000 + 964 = 241964
Step 252: 241964 + 964 = 242928
Step 253: 242928 + 964 = 243892
Step 254: 243892 + 964 = 244856
Step 255: 244856 + 964 = 245820

So, 964*255 = 245820