Sure thing, let's get straight to it. We start with 608 and we're going to multiply it by 20, which means adding 608 to itself 20 times.
Step 1: 0 + 608 = 608
Step 2: 608 + 608 = 1216
Step 3: 1216 + 608 = 1824
Step 4: 1824 + 608 = 2432
Step 5: 2432 + 608 = 3040
Step 6: 3040 + 608 = 3648
Step 7: 3648 + 608 = 4256
Step 8: 4256 + 608 = 4864
Step 9: 4864 + 608 = 5472
Step 10: 5472 + 608 = 6080
Step 11: 6080 + 608 = 6688
Step 12: 6688 + 608 = 7296
Step 13: 7296 + 608 = 7904
Step 14: 7904 + 608 = 8512
Step 15: 8512 + 608 = 9120
Step 16: 9120 + 608 = 9728
Step 17: 9728 + 608 = 10336
Step 18: 10336 + 608 = 10944
Step 19: 10944 + 608 = 11552
Step 20: 11552 + 608 = 12160

So, 608*20 = 12160