Let's roll up our sleeves and solve this. We have 106 and we're going to multiply it by 4, essentially adding 106 to itself 4 times.
Step 1: 0 + 106 = 106
Step 2: 106 + 106 = 212
Step 3: 212 + 106 = 318
Step 4: 318 + 106 = 424

So, 106*4 = 424