Let's get this math done. We have 512 and we're going to multiply it by 105. This is the same as taking 512 and adding it to itself 105 times.
Step 1: 0 + 512 = 512
Step 2: 512 + 512 = 1024
Step 3: 1024 + 512 = 1536
Step 4: 1536 + 512 = 2048
Step 5: 2048 + 512 = 2560
Step 6: 2560 + 512 = 3072
Step 7: 3072 + 512 = 3584
Step 8: 3584 + 512 = 4096
Step 9: 4096 + 512 = 4608
Step 10: 4608 + 512 = 5120
Step 11: 5120 + 512 = 5632
Step 12: 5632 + 512 = 6144
Step 13: 6144 + 512 = 6656
Step 14: 6656 + 512 = 7168
Step 15: 7168 + 512 = 7680
Step 16: 7680 + 512 = 8192
Step 17: 8192 + 512 = 8704
Step 18: 8704 + 512 = 9216
Step 19: 9216 + 512 = 9728
Step 20: 9728 + 512 = 10240
Step 21: 10240 + 512 = 10752
Step 22: 10752 + 512 = 11264
Step 23: 11264 + 512 = 11776
Step 24: 11776 + 512 = 12288
Step 25: 12288 + 512 = 12800
Step 26: 12800 + 512 = 13312
Step 27: 13312 + 512 = 13824
Step 28: 13824 + 512 = 14336
Step 29: 14336 + 512 = 14848
Step 30: 14848 + 512 = 15360
Step 31: 15360 + 512 = 15872
Step 32: 15872 + 512 = 16384
Step 33: 16384 + 512 = 16896
Step 34: 16896 + 512 = 17408
Step 35: 17408 + 512 = 17920
Step 36: 17920 + 512 = 18432
Step 37: 18432 + 512 = 18944
Step 38: 18944 + 512 = 19456
Step 39: 19456 + 512 = 19968
Step 40: 19968 + 512 = 20480
Step 41: 20480 + 512 = 20992
Step 42: 20992 + 512 = 21504
Step 43: 21504 + 512 = 22016
Step 44: 22016 + 512 = 22528
Step 45: 22528 + 512 = 23040
Step 46: 23040 + 512 = 23552
Step 47: 23552 + 512 = 24064
Step 48: 24064 + 512 = 24576
Step 49: 24576 + 512 = 25088
Step 50: 25088 + 512 = 25600
Step 51: 25600 + 512 = 26112
Step 52: 26112 + 512 = 26624
Step 53: 26624 + 512 = 27136
Step 54: 27136 + 512 = 27648
Step 55: 27648 + 512 = 28160
Step 56: 28160 + 512 = 28672
Step 57: 28672 + 512 = 29184
Step 58: 29184 + 512 = 29696
Step 59: 29696 + 512 = 30208
Step 60: 30208 + 512 = 30720
Step 61: 30720 + 512 = 31232
Step 62: 31232 + 512 = 31744
Step 63: 31744 + 512 = 32256
Step 64: 32256 + 512 = 32768
Step 65: 32768 + 512 = 33280
Step 66: 33280 + 512 = 33792
Step 67: 33792 + 512 = 34304
Step 68: 34304 + 512 = 34816
Step 69: 34816 + 512 = 35328
Step 70: 35328 + 512 = 35840
Step 71: 35840 + 512 = 36352
Step 72: 36352 + 512 = 36864
Step 73: 36864 + 512 = 37376
Step 74: 37376 + 512 = 37888
Step 75: 37888 + 512 = 38400
Step 76: 38400 + 512 = 38912
Step 77: 38912 + 512 = 39424
Step 78: 39424 + 512 = 39936
Step 79: 39936 + 512 = 40448
Step 80: 40448 + 512 = 40960
Step 81: 40960 + 512 = 41472
Step 82: 41472 + 512 = 41984
Step 83: 41984 + 512 = 42496
Step 84: 42496 + 512 = 43008
Step 85: 43008 + 512 = 43520
Step 86: 43520 + 512 = 44032
Step 87: 44032 + 512 = 44544
Step 88: 44544 + 512 = 45056
Step 89: 45056 + 512 = 45568
Step 90: 45568 + 512 = 46080
Step 91: 46080 + 512 = 46592
Step 92: 46592 + 512 = 47104
Step 93: 47104 + 512 = 47616
Step 94: 47616 + 512 = 48128
Step 95: 48128 + 512 = 48640
Step 96: 48640 + 512 = 49152
Step 97: 49152 + 512 = 49664
Step 98: 49664 + 512 = 50176
Step 99: 50176 + 512 = 50688
Step 100: 50688 + 512 = 51200
Step 101: 51200 + 512 = 51712
Step 102: 51712 + 512 = 52224
Step 103: 52224 + 512 = 52736
Step 104: 52736 + 512 = 53248
Step 105: 53248 + 512 = 53760

So, 512*105 = 53760