Sure thing! We've got 932 and we're gonna multiply it by 21. That's the same as adding 932 to itself 21 times.
Step 1: 0 + 932 = 932
Step 2: 932 + 932 = 1864
Step 3: 1864 + 932 = 2796
Step 4: 2796 + 932 = 3728
Step 5: 3728 + 932 = 4660
Step 6: 4660 + 932 = 5592
Step 7: 5592 + 932 = 6524
Step 8: 6524 + 932 = 7456
Step 9: 7456 + 932 = 8388
Step 10: 8388 + 932 = 9320
Step 11: 9320 + 932 = 10252
Step 12: 10252 + 932 = 11184
Step 13: 11184 + 932 = 12116
Step 14: 12116 + 932 = 13048
Step 15: 13048 + 932 = 13980
Step 16: 13980 + 932 = 14912
Step 17: 14912 + 932 = 15844
Step 18: 15844 + 932 = 16776
Step 19: 16776 + 932 = 17708
Step 20: 17708 + 932 = 18640
Step 21: 18640 + 932 = 19572

So, 932*21 = 19572