Let's get this math done. We have 561 and we're going to multiply it by 7. This is the same as taking 561 and adding it to itself 7 times.
Step 1: 0 + 561 = 561
Step 2: 561 + 561 = 1122
Step 3: 1122 + 561 = 1683
Step 4: 1683 + 561 = 2244
Step 5: 2244 + 561 = 2805
Step 6: 2805 + 561 = 3366
Step 7: 3366 + 561 = 3927

So, 561*7 = 3927