OK, let's work through this together. We're starting with 756 and we're going to multiply it by 7, which means we add 756 to itself 7 times.
Step 1: 0 + 756 = 756
Step 2: 756 + 756 = 1512
Step 3: 1512 + 756 = 2268
Step 4: 2268 + 756 = 3024
Step 5: 3024 + 756 = 3780
Step 6: 3780 + 756 = 4536
Step 7: 4536 + 756 = 5292

So, 756*7 = 5292