OK, let's work through this together. We're starting with 441 and we're going to multiply it by 9, which means we add 441 to itself 9 times.
Step 1: 0 + 441 = 441
Step 2: 441 + 441 = 882
Step 3: 882 + 441 = 1323
Step 4: 1323 + 441 = 1764
Step 5: 1764 + 441 = 2205
Step 6: 2205 + 441 = 2646
Step 7: 2646 + 441 = 3087
Step 8: 3087 + 441 = 3528
Step 9: 3528 + 441 = 3969

So, 441*9 = 3969