OK, let's crack this. We're given 681 and our task is to multiply it by 46. Essentially, we'll be adding 681 to itself 46 times.
Step 1: 0 + 681 = 681
Step 2: 681 + 681 = 1362
Step 3: 1362 + 681 = 2043
Step 4: 2043 + 681 = 2724
Step 5: 2724 + 681 = 3405
Step 6: 3405 + 681 = 4086
Step 7: 4086 + 681 = 4767
Step 8: 4767 + 681 = 5448
Step 9: 5448 + 681 = 6129
Step 10: 6129 + 681 = 6810
Step 11: 6810 + 681 = 7491
Step 12: 7491 + 681 = 8172
Step 13: 8172 + 681 = 8853
Step 14: 8853 + 681 = 9534
Step 15: 9534 + 681 = 10215
Step 16: 10215 + 681 = 10896
Step 17: 10896 + 681 = 11577
Step 18: 11577 + 681 = 12258
Step 19: 12258 + 681 = 12939
Step 20: 12939 + 681 = 13620
Step 21: 13620 + 681 = 14301
Step 22: 14301 + 681 = 14982
Step 23: 14982 + 681 = 15663
Step 24: 15663 + 681 = 16344
Step 25: 16344 + 681 = 17025
Step 26: 17025 + 681 = 17706
Step 27: 17706 + 681 = 18387
Step 28: 18387 + 681 = 19068
Step 29: 19068 + 681 = 19749
Step 30: 19749 + 681 = 20430
Step 31: 20430 + 681 = 21111
Step 32: 21111 + 681 = 21792
Step 33: 21792 + 681 = 22473
Step 34: 22473 + 681 = 23154
Step 35: 23154 + 681 = 23835
Step 36: 23835 + 681 = 24516
Step 37: 24516 + 681 = 25197
Step 38: 25197 + 681 = 25878
Step 39: 25878 + 681 = 26559
Step 40: 26559 + 681 = 27240
Step 41: 27240 + 681 = 27921
Step 42: 27921 + 681 = 28602
Step 43: 28602 + 681 = 29283
Step 44: 29283 + 681 = 29964
Step 45: 29964 + 681 = 30645
Step 46: 30645 + 681 = 31326

So, 681*46 = 31326