OK, let's work through this together. We're starting with 738 and we're going to multiply it by 23, which means we add 738 to itself 23 times.
Step 1: 0 + 738 = 738
Step 2: 738 + 738 = 1476
Step 3: 1476 + 738 = 2214
Step 4: 2214 + 738 = 2952
Step 5: 2952 + 738 = 3690
Step 6: 3690 + 738 = 4428
Step 7: 4428 + 738 = 5166
Step 8: 5166 + 738 = 5904
Step 9: 5904 + 738 = 6642
Step 10: 6642 + 738 = 7380
Step 11: 7380 + 738 = 8118
Step 12: 8118 + 738 = 8856
Step 13: 8856 + 738 = 9594
Step 14: 9594 + 738 = 10332
Step 15: 10332 + 738 = 11070
Step 16: 11070 + 738 = 11808
Step 17: 11808 + 738 = 12546
Step 18: 12546 + 738 = 13284
Step 19: 13284 + 738 = 14022
Step 20: 14022 + 738 = 14760
Step 21: 14760 + 738 = 15498
Step 22: 15498 + 738 = 16236
Step 23: 16236 + 738 = 16974

So, 738*23 = 16974