Let's roll up our sleeves and solve this. We have 608 and we're going to multiply it by 11, essentially adding 608 to itself 11 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

So, 608*11 = 6688