Alright, let's solve this math problem step by step. First, we have the number 139. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 27. So, we're going to take the number 139 and add it to itself 27 times.
Step 1: 0 + 139 = 139
Step 2: 139 + 139 = 278
Step 3: 278 + 139 = 417
Step 4: 417 + 139 = 556
Step 5: 556 + 139 = 695
Step 6: 695 + 139 = 834
Step 7: 834 + 139 = 973
Step 8: 973 + 139 = 1112
Step 9: 1112 + 139 = 1251
Step 10: 1251 + 139 = 1390
Step 11: 1390 + 139 = 1529
Step 12: 1529 + 139 = 1668
Step 13: 1668 + 139 = 1807
Step 14: 1807 + 139 = 1946
Step 15: 1946 + 139 = 2085
Step 16: 2085 + 139 = 2224
Step 17: 2224 + 139 = 2363
Step 18: 2363 + 139 = 2502
Step 19: 2502 + 139 = 2641
Step 20: 2641 + 139 = 2780
Step 21: 2780 + 139 = 2919
Step 22: 2919 + 139 = 3058
Step 23: 3058 + 139 = 3197
Step 24: 3197 + 139 = 3336
Step 25: 3336 + 139 = 3475
Step 26: 3475 + 139 = 3614
Step 27: 3614 + 139 = 3753

So, 139*27 = 3753