Sure thing, let's get straight to it. We start with 823 and we're going to multiply it by 23, which means adding 823 to itself 23 times.
Step 1: 0 + 823 = 823
Step 2: 823 + 823 = 1646
Step 3: 1646 + 823 = 2469
Step 4: 2469 + 823 = 3292
Step 5: 3292 + 823 = 4115
Step 6: 4115 + 823 = 4938
Step 7: 4938 + 823 = 5761
Step 8: 5761 + 823 = 6584
Step 9: 6584 + 823 = 7407
Step 10: 7407 + 823 = 8230
Step 11: 8230 + 823 = 9053
Step 12: 9053 + 823 = 9876
Step 13: 9876 + 823 = 10699
Step 14: 10699 + 823 = 11522
Step 15: 11522 + 823 = 12345
Step 16: 12345 + 823 = 13168
Step 17: 13168 + 823 = 13991
Step 18: 13991 + 823 = 14814
Step 19: 14814 + 823 = 15637
Step 20: 15637 + 823 = 16460
Step 21: 16460 + 823 = 17283
Step 22: 17283 + 823 = 18106
Step 23: 18106 + 823 = 18929

So, 823*23 = 18929