Let's get this math done. We have 448 and we're going to multiply it by 10. This is the same as taking 448 and adding it to itself 10 times.
Step 1: 0 + 448 = 448
Step 2: 448 + 448 = 896
Step 3: 896 + 448 = 1344
Step 4: 1344 + 448 = 1792
Step 5: 1792 + 448 = 2240
Step 6: 2240 + 448 = 2688
Step 7: 2688 + 448 = 3136
Step 8: 3136 + 448 = 3584
Step 9: 3584 + 448 = 4032
Step 10: 4032 + 448 = 4480

So, 448*10 = 4480