Without delay, let's solve this. We've got 139 and we will be multiplying it by 79, that is, adding 139 to itself 79 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
Step 28: 3753 + 139 = 3892
Step 29: 3892 + 139 = 4031
Step 30: 4031 + 139 = 4170
Step 31: 4170 + 139 = 4309
Step 32: 4309 + 139 = 4448
Step 33: 4448 + 139 = 4587
Step 34: 4587 + 139 = 4726
Step 35: 4726 + 139 = 4865
Step 36: 4865 + 139 = 5004
Step 37: 5004 + 139 = 5143
Step 38: 5143 + 139 = 5282
Step 39: 5282 + 139 = 5421
Step 40: 5421 + 139 = 5560
Step 41: 5560 + 139 = 5699
Step 42: 5699 + 139 = 5838
Step 43: 5838 + 139 = 5977
Step 44: 5977 + 139 = 6116
Step 45: 6116 + 139 = 6255
Step 46: 6255 + 139 = 6394
Step 47: 6394 + 139 = 6533
Step 48: 6533 + 139 = 6672
Step 49: 6672 + 139 = 6811
Step 50: 6811 + 139 = 6950
Step 51: 6950 + 139 = 7089
Step 52: 7089 + 139 = 7228
Step 53: 7228 + 139 = 7367
Step 54: 7367 + 139 = 7506
Step 55: 7506 + 139 = 7645
Step 56: 7645 + 139 = 7784
Step 57: 7784 + 139 = 7923
Step 58: 7923 + 139 = 8062
Step 59: 8062 + 139 = 8201
Step 60: 8201 + 139 = 8340
Step 61: 8340 + 139 = 8479
Step 62: 8479 + 139 = 8618
Step 63: 8618 + 139 = 8757
Step 64: 8757 + 139 = 8896
Step 65: 8896 + 139 = 9035
Step 66: 9035 + 139 = 9174
Step 67: 9174 + 139 = 9313
Step 68: 9313 + 139 = 9452
Step 69: 9452 + 139 = 9591
Step 70: 9591 + 139 = 9730
Step 71: 9730 + 139 = 9869
Step 72: 9869 + 139 = 10008
Step 73: 10008 + 139 = 10147
Step 74: 10147 + 139 = 10286
Step 75: 10286 + 139 = 10425
Step 76: 10425 + 139 = 10564
Step 77: 10564 + 139 = 10703
Step 78: 10703 + 139 = 10842
Step 79: 10842 + 139 = 10981

So, 139*79 = 10981