OK, let's crack this. We're given 348 and our task is to multiply it by 4. Essentially, we'll be adding 348 to itself 4 times.
Step 1: 0 + 348 = 348
Step 2: 348 + 348 = 696
Step 3: 696 + 348 = 1044
Step 4: 1044 + 348 = 1392

So, 348*4 = 1392