Alright, let's solve this math problem step by step. First, we have the number 31. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 29. So, we're going to take the number 31 and add it to itself 29 times.
Step 1: 0 + 31 = 31
Step 2: 31 + 31 = 62
Step 3: 62 + 31 = 93
Step 4: 93 + 31 = 124
Step 5: 124 + 31 = 155
Step 6: 155 + 31 = 186
Step 7: 186 + 31 = 217
Step 8: 217 + 31 = 248
Step 9: 248 + 31 = 279
Step 10: 279 + 31 = 310
Step 11: 310 + 31 = 341
Step 12: 341 + 31 = 372
Step 13: 372 + 31 = 403
Step 14: 403 + 31 = 434
Step 15: 434 + 31 = 465
Step 16: 465 + 31 = 496
Step 17: 496 + 31 = 527
Step 18: 527 + 31 = 558
Step 19: 558 + 31 = 589
Step 20: 589 + 31 = 620
Step 21: 620 + 31 = 651
Step 22: 651 + 31 = 682
Step 23: 682 + 31 = 713
Step 24: 713 + 31 = 744
Step 25: 744 + 31 = 775
Step 26: 775 + 31 = 806
Step 27: 806 + 31 = 837
Step 28: 837 + 31 = 868
Step 29: 868 + 31 = 899

So, 31*29 = 899