OK, let's work through this together. We're starting with 958 and we're going to multiply it by 9, which means we add 958 to itself 9 times.
Step 1: 0 + 958 = 958
Step 2: 958 + 958 = 1916
Step 3: 1916 + 958 = 2874
Step 4: 2874 + 958 = 3832
Step 5: 3832 + 958 = 4790
Step 6: 4790 + 958 = 5748
Step 7: 5748 + 958 = 6706
Step 8: 6706 + 958 = 7664
Step 9: 7664 + 958 = 8622

So, 958*9 = 8622