Let's roll up our sleeves and solve this. We have 158 and we're going to multiply it by 29, essentially adding 158 to itself 29 times.
Step 1: 0 + 158 = 158
Step 2: 158 + 158 = 316
Step 3: 316 + 158 = 474
Step 4: 474 + 158 = 632
Step 5: 632 + 158 = 790
Step 6: 790 + 158 = 948
Step 7: 948 + 158 = 1106
Step 8: 1106 + 158 = 1264
Step 9: 1264 + 158 = 1422
Step 10: 1422 + 158 = 1580
Step 11: 1580 + 158 = 1738
Step 12: 1738 + 158 = 1896
Step 13: 1896 + 158 = 2054
Step 14: 2054 + 158 = 2212
Step 15: 2212 + 158 = 2370
Step 16: 2370 + 158 = 2528
Step 17: 2528 + 158 = 2686
Step 18: 2686 + 158 = 2844
Step 19: 2844 + 158 = 3002
Step 20: 3002 + 158 = 3160
Step 21: 3160 + 158 = 3318
Step 22: 3318 + 158 = 3476
Step 23: 3476 + 158 = 3634
Step 24: 3634 + 158 = 3792
Step 25: 3792 + 158 = 3950
Step 26: 3950 + 158 = 4108
Step 27: 4108 + 158 = 4266
Step 28: 4266 + 158 = 4424
Step 29: 4424 + 158 = 4582

So, 158*29 = 4582