Let's roll up our sleeves and solve this. We have 676 and we're going to multiply it by 43, essentially adding 676 to itself 43 times.
Step 1: 0 + 676 = 676
Step 2: 676 + 676 = 1352
Step 3: 1352 + 676 = 2028
Step 4: 2028 + 676 = 2704
Step 5: 2704 + 676 = 3380
Step 6: 3380 + 676 = 4056
Step 7: 4056 + 676 = 4732
Step 8: 4732 + 676 = 5408
Step 9: 5408 + 676 = 6084
Step 10: 6084 + 676 = 6760
Step 11: 6760 + 676 = 7436
Step 12: 7436 + 676 = 8112
Step 13: 8112 + 676 = 8788
Step 14: 8788 + 676 = 9464
Step 15: 9464 + 676 = 10140
Step 16: 10140 + 676 = 10816
Step 17: 10816 + 676 = 11492
Step 18: 11492 + 676 = 12168
Step 19: 12168 + 676 = 12844
Step 20: 12844 + 676 = 13520
Step 21: 13520 + 676 = 14196
Step 22: 14196 + 676 = 14872
Step 23: 14872 + 676 = 15548
Step 24: 15548 + 676 = 16224
Step 25: 16224 + 676 = 16900
Step 26: 16900 + 676 = 17576
Step 27: 17576 + 676 = 18252
Step 28: 18252 + 676 = 18928
Step 29: 18928 + 676 = 19604
Step 30: 19604 + 676 = 20280
Step 31: 20280 + 676 = 20956
Step 32: 20956 + 676 = 21632
Step 33: 21632 + 676 = 22308
Step 34: 22308 + 676 = 22984
Step 35: 22984 + 676 = 23660
Step 36: 23660 + 676 = 24336
Step 37: 24336 + 676 = 25012
Step 38: 25012 + 676 = 25688
Step 39: 25688 + 676 = 26364
Step 40: 26364 + 676 = 27040
Step 41: 27040 + 676 = 27716
Step 42: 27716 + 676 = 28392
Step 43: 28392 + 676 = 29068

So, 676*43 = 29068