Let's get this math done. We have 892 and we're going to multiply it by 23. This is the same as taking 892 and adding it to itself 23 times.
Step 1: 0 + 892 = 892
Step 2: 892 + 892 = 1784
Step 3: 1784 + 892 = 2676
Step 4: 2676 + 892 = 3568
Step 5: 3568 + 892 = 4460
Step 6: 4460 + 892 = 5352
Step 7: 5352 + 892 = 6244
Step 8: 6244 + 892 = 7136
Step 9: 7136 + 892 = 8028
Step 10: 8028 + 892 = 8920
Step 11: 8920 + 892 = 9812
Step 12: 9812 + 892 = 10704
Step 13: 10704 + 892 = 11596
Step 14: 11596 + 892 = 12488
Step 15: 12488 + 892 = 13380
Step 16: 13380 + 892 = 14272
Step 17: 14272 + 892 = 15164
Step 18: 15164 + 892 = 16056
Step 19: 16056 + 892 = 16948
Step 20: 16948 + 892 = 17840
Step 21: 17840 + 892 = 18732
Step 22: 18732 + 892 = 19624
Step 23: 19624 + 892 = 20516

So, 892*23 = 20516