Let's roll up our sleeves and solve this. We have 700 and we're going to multiply it by 7, essentially adding 700 to itself 7 times.
Step 1: 0 + 700 = 700
Step 2: 700 + 700 = 1400
Step 3: 1400 + 700 = 2100
Step 4: 2100 + 700 = 2800
Step 5: 2800 + 700 = 3500
Step 6: 3500 + 700 = 4200
Step 7: 4200 + 700 = 4900

So, 700*7 = 4900