Sure thing, let's get straight to it. We start with 624 and we're going to multiply it by 6, which means adding 624 to itself 6 times.
Step 1: 0 + 624 = 624
Step 2: 624 + 624 = 1248
Step 3: 1248 + 624 = 1872
Step 4: 1872 + 624 = 2496
Step 5: 2496 + 624 = 3120
Step 6: 3120 + 624 = 3744

So, 624*6 = 3744