Let's roll up our sleeves and solve this. We have 340 and we're going to multiply it by 5, essentially adding 340 to itself 5 times.
Step 1: 0 + 340 = 340
Step 2: 340 + 340 = 680
Step 3: 680 + 340 = 1020
Step 4: 1020 + 340 = 1360
Step 5: 1360 + 340 = 1700

So, 340*5 = 1700