OK, let's work through this together. We're starting with 704 and we're going to multiply it by 10, which means we add 704 to itself 10 times.
Step 1: 0 + 704 = 704
Step 2: 704 + 704 = 1408
Step 3: 1408 + 704 = 2112
Step 4: 2112 + 704 = 2816
Step 5: 2816 + 704 = 3520
Step 6: 3520 + 704 = 4224
Step 7: 4224 + 704 = 4928
Step 8: 4928 + 704 = 5632
Step 9: 5632 + 704 = 6336
Step 10: 6336 + 704 = 7040

So, 704*10 = 7040