OK, let's work through this together. We're starting with 484 and we're going to multiply it by 10, which means we add 484 to itself 10 times.
Step 1: 0 + 484 = 484
Step 2: 484 + 484 = 968
Step 3: 968 + 484 = 1452
Step 4: 1452 + 484 = 1936
Step 5: 1936 + 484 = 2420
Step 6: 2420 + 484 = 2904
Step 7: 2904 + 484 = 3388
Step 8: 3388 + 484 = 3872
Step 9: 3872 + 484 = 4356
Step 10: 4356 + 484 = 4840

So, 484*10 = 4840