Let's get this math done. We have 784 and we're going to multiply it by 260. This is the same as taking 784 and adding it to itself 260 times.
Step 1: 0 + 784 = 784
Step 2: 784 + 784 = 1568
Step 3: 1568 + 784 = 2352
Step 4: 2352 + 784 = 3136
Step 5: 3136 + 784 = 3920
Step 6: 3920 + 784 = 4704
Step 7: 4704 + 784 = 5488
Step 8: 5488 + 784 = 6272
Step 9: 6272 + 784 = 7056
Step 10: 7056 + 784 = 7840
Step 11: 7840 + 784 = 8624
Step 12: 8624 + 784 = 9408
Step 13: 9408 + 784 = 10192
Step 14: 10192 + 784 = 10976
Step 15: 10976 + 784 = 11760
Step 16: 11760 + 784 = 12544
Step 17: 12544 + 784 = 13328
Step 18: 13328 + 784 = 14112
Step 19: 14112 + 784 = 14896
Step 20: 14896 + 784 = 15680
Step 21: 15680 + 784 = 16464
Step 22: 16464 + 784 = 17248
Step 23: 17248 + 784 = 18032
Step 24: 18032 + 784 = 18816
Step 25: 18816 + 784 = 19600
Step 26: 19600 + 784 = 20384
Step 27: 20384 + 784 = 21168
Step 28: 21168 + 784 = 21952
Step 29: 21952 + 784 = 22736
Step 30: 22736 + 784 = 23520
Step 31: 23520 + 784 = 24304
Step 32: 24304 + 784 = 25088
Step 33: 25088 + 784 = 25872
Step 34: 25872 + 784 = 26656
Step 35: 26656 + 784 = 27440
Step 36: 27440 + 784 = 28224
Step 37: 28224 + 784 = 29008
Step 38: 29008 + 784 = 29792
Step 39: 29792 + 784 = 30576
Step 40: 30576 + 784 = 31360
Step 41: 31360 + 784 = 32144
Step 42: 32144 + 784 = 32928
Step 43: 32928 + 784 = 33712
Step 44: 33712 + 784 = 34496
Step 45: 34496 + 784 = 35280
Step 46: 35280 + 784 = 36064
Step 47: 36064 + 784 = 36848
Step 48: 36848 + 784 = 37632
Step 49: 37632 + 784 = 38416
Step 50: 38416 + 784 = 39200
Step 51: 39200 + 784 = 39984
Step 52: 39984 + 784 = 40768
Step 53: 40768 + 784 = 41552
Step 54: 41552 + 784 = 42336
Step 55: 42336 + 784 = 43120
Step 56: 43120 + 784 = 43904
Step 57: 43904 + 784 = 44688
Step 58: 44688 + 784 = 45472
Step 59: 45472 + 784 = 46256
Step 60: 46256 + 784 = 47040
Step 61: 47040 + 784 = 47824
Step 62: 47824 + 784 = 48608
Step 63: 48608 + 784 = 49392
Step 64: 49392 + 784 = 50176
Step 65: 50176 + 784 = 50960
Step 66: 50960 + 784 = 51744
Step 67: 51744 + 784 = 52528
Step 68: 52528 + 784 = 53312
Step 69: 53312 + 784 = 54096
Step 70: 54096 + 784 = 54880
Step 71: 54880 + 784 = 55664
Step 72: 55664 + 784 = 56448
Step 73: 56448 + 784 = 57232
Step 74: 57232 + 784 = 58016
Step 75: 58016 + 784 = 58800
Step 76: 58800 + 784 = 59584
Step 77: 59584 + 784 = 60368
Step 78: 60368 + 784 = 61152
Step 79: 61152 + 784 = 61936
Step 80: 61936 + 784 = 62720
Step 81: 62720 + 784 = 63504
Step 82: 63504 + 784 = 64288
Step 83: 64288 + 784 = 65072
Step 84: 65072 + 784 = 65856
Step 85: 65856 + 784 = 66640
Step 86: 66640 + 784 = 67424
Step 87: 67424 + 784 = 68208
Step 88: 68208 + 784 = 68992
Step 89: 68992 + 784 = 69776
Step 90: 69776 + 784 = 70560
Step 91: 70560 + 784 = 71344
Step 92: 71344 + 784 = 72128
Step 93: 72128 + 784 = 72912
Step 94: 72912 + 784 = 73696
Step 95: 73696 + 784 = 74480
Step 96: 74480 + 784 = 75264
Step 97: 75264 + 784 = 76048
Step 98: 76048 + 784 = 76832
Step 99: 76832 + 784 = 77616
Step 100: 77616 + 784 = 78400
Step 101: 78400 + 784 = 79184
Step 102: 79184 + 784 = 79968
Step 103: 79968 + 784 = 80752
Step 104: 80752 + 784 = 81536
Step 105: 81536 + 784 = 82320
Step 106: 82320 + 784 = 83104
Step 107: 83104 + 784 = 83888
Step 108: 83888 + 784 = 84672
Step 109: 84672 + 784 = 85456
Step 110: 85456 + 784 = 86240
Step 111: 86240 + 784 = 87024
Step 112: 87024 + 784 = 87808
Step 113: 87808 + 784 = 88592
Step 114: 88592 + 784 = 89376
Step 115: 89376 + 784 = 90160
Step 116: 90160 + 784 = 90944
Step 117: 90944 + 784 = 91728
Step 118: 91728 + 784 = 92512
Step 119: 92512 + 784 = 93296
Step 120: 93296 + 784 = 94080
Step 121: 94080 + 784 = 94864
Step 122: 94864 + 784 = 95648
Step 123: 95648 + 784 = 96432
Step 124: 96432 + 784 = 97216
Step 125: 97216 + 784 = 98000
Step 126: 98000 + 784 = 98784
Step 127: 98784 + 784 = 99568
Step 128: 99568 + 784 = 100352
Step 129: 100352 + 784 = 101136
Step 130: 101136 + 784 = 101920
Step 131: 101920 + 784 = 102704
Step 132: 102704 + 784 = 103488
Step 133: 103488 + 784 = 104272
Step 134: 104272 + 784 = 105056
Step 135: 105056 + 784 = 105840
Step 136: 105840 + 784 = 106624
Step 137: 106624 + 784 = 107408
Step 138: 107408 + 784 = 108192
Step 139: 108192 + 784 = 108976
Step 140: 108976 + 784 = 109760
Step 141: 109760 + 784 = 110544
Step 142: 110544 + 784 = 111328
Step 143: 111328 + 784 = 112112
Step 144: 112112 + 784 = 112896
Step 145: 112896 + 784 = 113680
Step 146: 113680 + 784 = 114464
Step 147: 114464 + 784 = 115248
Step 148: 115248 + 784 = 116032
Step 149: 116032 + 784 = 116816
Step 150: 116816 + 784 = 117600
Step 151: 117600 + 784 = 118384
Step 152: 118384 + 784 = 119168
Step 153: 119168 + 784 = 119952
Step 154: 119952 + 784 = 120736
Step 155: 120736 + 784 = 121520
Step 156: 121520 + 784 = 122304
Step 157: 122304 + 784 = 123088
Step 158: 123088 + 784 = 123872
Step 159: 123872 + 784 = 124656
Step 160: 124656 + 784 = 125440
Step 161: 125440 + 784 = 126224
Step 162: 126224 + 784 = 127008
Step 163: 127008 + 784 = 127792
Step 164: 127792 + 784 = 128576
Step 165: 128576 + 784 = 129360
Step 166: 129360 + 784 = 130144
Step 167: 130144 + 784 = 130928
Step 168: 130928 + 784 = 131712
Step 169: 131712 + 784 = 132496
Step 170: 132496 + 784 = 133280
Step 171: 133280 + 784 = 134064
Step 172: 134064 + 784 = 134848
Step 173: 134848 + 784 = 135632
Step 174: 135632 + 784 = 136416
Step 175: 136416 + 784 = 137200
Step 176: 137200 + 784 = 137984
Step 177: 137984 + 784 = 138768
Step 178: 138768 + 784 = 139552
Step 179: 139552 + 784 = 140336
Step 180: 140336 + 784 = 141120
Step 181: 141120 + 784 = 141904
Step 182: 141904 + 784 = 142688
Step 183: 142688 + 784 = 143472
Step 184: 143472 + 784 = 144256
Step 185: 144256 + 784 = 145040
Step 186: 145040 + 784 = 145824
Step 187: 145824 + 784 = 146608
Step 188: 146608 + 784 = 147392
Step 189: 147392 + 784 = 148176
Step 190: 148176 + 784 = 148960
Step 191: 148960 + 784 = 149744
Step 192: 149744 + 784 = 150528
Step 193: 150528 + 784 = 151312
Step 194: 151312 + 784 = 152096
Step 195: 152096 + 784 = 152880
Step 196: 152880 + 784 = 153664
Step 197: 153664 + 784 = 154448
Step 198: 154448 + 784 = 155232
Step 199: 155232 + 784 = 156016
Step 200: 156016 + 784 = 156800
Step 201: 156800 + 784 = 157584
Step 202: 157584 + 784 = 158368
Step 203: 158368 + 784 = 159152
Step 204: 159152 + 784 = 159936
Step 205: 159936 + 784 = 160720
Step 206: 160720 + 784 = 161504
Step 207: 161504 + 784 = 162288
Step 208: 162288 + 784 = 163072
Step 209: 163072 + 784 = 163856
Step 210: 163856 + 784 = 164640
Step 211: 164640 + 784 = 165424
Step 212: 165424 + 784 = 166208
Step 213: 166208 + 784 = 166992
Step 214: 166992 + 784 = 167776
Step 215: 167776 + 784 = 168560
Step 216: 168560 + 784 = 169344
Step 217: 169344 + 784 = 170128
Step 218: 170128 + 784 = 170912
Step 219: 170912 + 784 = 171696
Step 220: 171696 + 784 = 172480
Step 221: 172480 + 784 = 173264
Step 222: 173264 + 784 = 174048
Step 223: 174048 + 784 = 174832
Step 224: 174832 + 784 = 175616
Step 225: 175616 + 784 = 176400
Step 226: 176400 + 784 = 177184
Step 227: 177184 + 784 = 177968
Step 228: 177968 + 784 = 178752
Step 229: 178752 + 784 = 179536
Step 230: 179536 + 784 = 180320
Step 231: 180320 + 784 = 181104
Step 232: 181104 + 784 = 181888
Step 233: 181888 + 784 = 182672
Step 234: 182672 + 784 = 183456
Step 235: 183456 + 784 = 184240
Step 236: 184240 + 784 = 185024
Step 237: 185024 + 784 = 185808
Step 238: 185808 + 784 = 186592
Step 239: 186592 + 784 = 187376
Step 240: 187376 + 784 = 188160
Step 241: 188160 + 784 = 188944
Step 242: 188944 + 784 = 189728
Step 243: 189728 + 784 = 190512
Step 244: 190512 + 784 = 191296
Step 245: 191296 + 784 = 192080
Step 246: 192080 + 784 = 192864
Step 247: 192864 + 784 = 193648
Step 248: 193648 + 784 = 194432
Step 249: 194432 + 784 = 195216
Step 250: 195216 + 784 = 196000
Step 251: 196000 + 784 = 196784
Step 252: 196784 + 784 = 197568
Step 253: 197568 + 784 = 198352
Step 254: 198352 + 784 = 199136
Step 255: 199136 + 784 = 199920
Step 256: 199920 + 784 = 200704
Step 257: 200704 + 784 = 201488
Step 258: 201488 + 784 = 202272
Step 259: 202272 + 784 = 203056
Step 260: 203056 + 784 = 203840

So, 784*260 = 203840