OK, let's work through this together. We're starting with 490 and we're going to multiply it by 9, which means we add 490 to itself 9 times.
Step 1: 0 + 490 = 490
Step 2: 490 + 490 = 980
Step 3: 980 + 490 = 1470
Step 4: 1470 + 490 = 1960
Step 5: 1960 + 490 = 2450
Step 6: 2450 + 490 = 2940
Step 7: 2940 + 490 = 3430
Step 8: 3430 + 490 = 3920
Step 9: 3920 + 490 = 4410

So, 490*9 = 4410