Let's roll up our sleeves and solve this. We have 989 and we're going to multiply it by 23, essentially adding 989 to itself 23 times.
Step 1: 0 + 989 = 989
Step 2: 989 + 989 = 1978
Step 3: 1978 + 989 = 2967
Step 4: 2967 + 989 = 3956
Step 5: 3956 + 989 = 4945
Step 6: 4945 + 989 = 5934
Step 7: 5934 + 989 = 6923
Step 8: 6923 + 989 = 7912
Step 9: 7912 + 989 = 8901
Step 10: 8901 + 989 = 9890
Step 11: 9890 + 989 = 10879
Step 12: 10879 + 989 = 11868
Step 13: 11868 + 989 = 12857
Step 14: 12857 + 989 = 13846
Step 15: 13846 + 989 = 14835
Step 16: 14835 + 989 = 15824
Step 17: 15824 + 989 = 16813
Step 18: 16813 + 989 = 17802
Step 19: 17802 + 989 = 18791
Step 20: 18791 + 989 = 19780
Step 21: 19780 + 989 = 20769
Step 22: 20769 + 989 = 21758
Step 23: 21758 + 989 = 22747

So, 989*23 = 22747