OK, let's crack this. We're given 88 and our task is to multiply it by 42. Essentially, we'll be adding 88 to itself 42 times.
Step 1: 0 + 88 = 88
Step 2: 88 + 88 = 176
Step 3: 176 + 88 = 264
Step 4: 264 + 88 = 352
Step 5: 352 + 88 = 440
Step 6: 440 + 88 = 528
Step 7: 528 + 88 = 616
Step 8: 616 + 88 = 704
Step 9: 704 + 88 = 792
Step 10: 792 + 88 = 880
Step 11: 880 + 88 = 968
Step 12: 968 + 88 = 1056
Step 13: 1056 + 88 = 1144
Step 14: 1144 + 88 = 1232
Step 15: 1232 + 88 = 1320
Step 16: 1320 + 88 = 1408
Step 17: 1408 + 88 = 1496
Step 18: 1496 + 88 = 1584
Step 19: 1584 + 88 = 1672
Step 20: 1672 + 88 = 1760
Step 21: 1760 + 88 = 1848
Step 22: 1848 + 88 = 1936
Step 23: 1936 + 88 = 2024
Step 24: 2024 + 88 = 2112
Step 25: 2112 + 88 = 2200
Step 26: 2200 + 88 = 2288
Step 27: 2288 + 88 = 2376
Step 28: 2376 + 88 = 2464
Step 29: 2464 + 88 = 2552
Step 30: 2552 + 88 = 2640
Step 31: 2640 + 88 = 2728
Step 32: 2728 + 88 = 2816
Step 33: 2816 + 88 = 2904
Step 34: 2904 + 88 = 2992
Step 35: 2992 + 88 = 3080
Step 36: 3080 + 88 = 3168
Step 37: 3168 + 88 = 3256
Step 38: 3256 + 88 = 3344
Step 39: 3344 + 88 = 3432
Step 40: 3432 + 88 = 3520
Step 41: 3520 + 88 = 3608
Step 42: 3608 + 88 = 3696

So, 88*42 = 3696