Let's roll up our sleeves and solve this. We have 717 and we're going to multiply it by 7, essentially adding 717 to itself 7 times.
Step 1: 0 + 717 = 717
Step 2: 717 + 717 = 1434
Step 3: 1434 + 717 = 2151
Step 4: 2151 + 717 = 2868
Step 5: 2868 + 717 = 3585
Step 6: 3585 + 717 = 4302
Step 7: 4302 + 717 = 5019

So, 717*7 = 5019