Without delay, let's solve this. We've got 758 and we will be multiplying it by 31, that is, adding 758 to itself 31 times.
Step 1: 0 + 758 = 758
Step 2: 758 + 758 = 1516
Step 3: 1516 + 758 = 2274
Step 4: 2274 + 758 = 3032
Step 5: 3032 + 758 = 3790
Step 6: 3790 + 758 = 4548
Step 7: 4548 + 758 = 5306
Step 8: 5306 + 758 = 6064
Step 9: 6064 + 758 = 6822
Step 10: 6822 + 758 = 7580
Step 11: 7580 + 758 = 8338
Step 12: 8338 + 758 = 9096
Step 13: 9096 + 758 = 9854
Step 14: 9854 + 758 = 10612
Step 15: 10612 + 758 = 11370
Step 16: 11370 + 758 = 12128
Step 17: 12128 + 758 = 12886
Step 18: 12886 + 758 = 13644
Step 19: 13644 + 758 = 14402
Step 20: 14402 + 758 = 15160
Step 21: 15160 + 758 = 15918
Step 22: 15918 + 758 = 16676
Step 23: 16676 + 758 = 17434
Step 24: 17434 + 758 = 18192
Step 25: 18192 + 758 = 18950
Step 26: 18950 + 758 = 19708
Step 27: 19708 + 758 = 20466
Step 28: 20466 + 758 = 21224
Step 29: 21224 + 758 = 21982
Step 30: 21982 + 758 = 22740
Step 31: 22740 + 758 = 23498

So, 758*31 = 23498