Alright, let's solve this math problem step by step. First, we have the number 644. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 114. So, we're going to take the number 644 and add it to itself 114 times.
Step 1: 0 + 644 = 644
Step 2: 644 + 644 = 1288
Step 3: 1288 + 644 = 1932
Step 4: 1932 + 644 = 2576
Step 5: 2576 + 644 = 3220
Step 6: 3220 + 644 = 3864
Step 7: 3864 + 644 = 4508
Step 8: 4508 + 644 = 5152
Step 9: 5152 + 644 = 5796
Step 10: 5796 + 644 = 6440
Step 11: 6440 + 644 = 7084
Step 12: 7084 + 644 = 7728
Step 13: 7728 + 644 = 8372
Step 14: 8372 + 644 = 9016
Step 15: 9016 + 644 = 9660
Step 16: 9660 + 644 = 10304
Step 17: 10304 + 644 = 10948
Step 18: 10948 + 644 = 11592
Step 19: 11592 + 644 = 12236
Step 20: 12236 + 644 = 12880
Step 21: 12880 + 644 = 13524
Step 22: 13524 + 644 = 14168
Step 23: 14168 + 644 = 14812
Step 24: 14812 + 644 = 15456
Step 25: 15456 + 644 = 16100
Step 26: 16100 + 644 = 16744
Step 27: 16744 + 644 = 17388
Step 28: 17388 + 644 = 18032
Step 29: 18032 + 644 = 18676
Step 30: 18676 + 644 = 19320
Step 31: 19320 + 644 = 19964
Step 32: 19964 + 644 = 20608
Step 33: 20608 + 644 = 21252
Step 34: 21252 + 644 = 21896
Step 35: 21896 + 644 = 22540
Step 36: 22540 + 644 = 23184
Step 37: 23184 + 644 = 23828
Step 38: 23828 + 644 = 24472
Step 39: 24472 + 644 = 25116
Step 40: 25116 + 644 = 25760
Step 41: 25760 + 644 = 26404
Step 42: 26404 + 644 = 27048
Step 43: 27048 + 644 = 27692
Step 44: 27692 + 644 = 28336
Step 45: 28336 + 644 = 28980
Step 46: 28980 + 644 = 29624
Step 47: 29624 + 644 = 30268
Step 48: 30268 + 644 = 30912
Step 49: 30912 + 644 = 31556
Step 50: 31556 + 644 = 32200
Step 51: 32200 + 644 = 32844
Step 52: 32844 + 644 = 33488
Step 53: 33488 + 644 = 34132
Step 54: 34132 + 644 = 34776
Step 55: 34776 + 644 = 35420
Step 56: 35420 + 644 = 36064
Step 57: 36064 + 644 = 36708
Step 58: 36708 + 644 = 37352
Step 59: 37352 + 644 = 37996
Step 60: 37996 + 644 = 38640
Step 61: 38640 + 644 = 39284
Step 62: 39284 + 644 = 39928
Step 63: 39928 + 644 = 40572
Step 64: 40572 + 644 = 41216
Step 65: 41216 + 644 = 41860
Step 66: 41860 + 644 = 42504
Step 67: 42504 + 644 = 43148
Step 68: 43148 + 644 = 43792
Step 69: 43792 + 644 = 44436
Step 70: 44436 + 644 = 45080
Step 71: 45080 + 644 = 45724
Step 72: 45724 + 644 = 46368
Step 73: 46368 + 644 = 47012
Step 74: 47012 + 644 = 47656
Step 75: 47656 + 644 = 48300
Step 76: 48300 + 644 = 48944
Step 77: 48944 + 644 = 49588
Step 78: 49588 + 644 = 50232
Step 79: 50232 + 644 = 50876
Step 80: 50876 + 644 = 51520
Step 81: 51520 + 644 = 52164
Step 82: 52164 + 644 = 52808
Step 83: 52808 + 644 = 53452
Step 84: 53452 + 644 = 54096
Step 85: 54096 + 644 = 54740
Step 86: 54740 + 644 = 55384
Step 87: 55384 + 644 = 56028
Step 88: 56028 + 644 = 56672
Step 89: 56672 + 644 = 57316
Step 90: 57316 + 644 = 57960
Step 91: 57960 + 644 = 58604
Step 92: 58604 + 644 = 59248
Step 93: 59248 + 644 = 59892
Step 94: 59892 + 644 = 60536
Step 95: 60536 + 644 = 61180
Step 96: 61180 + 644 = 61824
Step 97: 61824 + 644 = 62468
Step 98: 62468 + 644 = 63112
Step 99: 63112 + 644 = 63756
Step 100: 63756 + 644 = 64400
Step 101: 64400 + 644 = 65044
Step 102: 65044 + 644 = 65688
Step 103: 65688 + 644 = 66332
Step 104: 66332 + 644 = 66976
Step 105: 66976 + 644 = 67620
Step 106: 67620 + 644 = 68264
Step 107: 68264 + 644 = 68908
Step 108: 68908 + 644 = 69552
Step 109: 69552 + 644 = 70196
Step 110: 70196 + 644 = 70840
Step 111: 70840 + 644 = 71484
Step 112: 71484 + 644 = 72128
Step 113: 72128 + 644 = 72772
Step 114: 72772 + 644 = 73416

So, 644*114 = 73416