OK, let's work through this together. We're starting with 348 and we're going to multiply it by 5, which means we add 348 to itself 5 times.
Step 1: 0 + 348 = 348
Step 2: 348 + 348 = 696
Step 3: 696 + 348 = 1044
Step 4: 1044 + 348 = 1392
Step 5: 1392 + 348 = 1740

So, 348*5 = 1740