Let's get this math done. We have 833 and we're going to multiply it by 23. This is the same as taking 833 and adding it to itself 23 times.
Step 1: 0 + 833 = 833
Step 2: 833 + 833 = 1666
Step 3: 1666 + 833 = 2499
Step 4: 2499 + 833 = 3332
Step 5: 3332 + 833 = 4165
Step 6: 4165 + 833 = 4998
Step 7: 4998 + 833 = 5831
Step 8: 5831 + 833 = 6664
Step 9: 6664 + 833 = 7497
Step 10: 7497 + 833 = 8330
Step 11: 8330 + 833 = 9163
Step 12: 9163 + 833 = 9996
Step 13: 9996 + 833 = 10829
Step 14: 10829 + 833 = 11662
Step 15: 11662 + 833 = 12495
Step 16: 12495 + 833 = 13328
Step 17: 13328 + 833 = 14161
Step 18: 14161 + 833 = 14994
Step 19: 14994 + 833 = 15827
Step 20: 15827 + 833 = 16660
Step 21: 16660 + 833 = 17493
Step 22: 17493 + 833 = 18326
Step 23: 18326 + 833 = 19159

So, 833*23 = 19159