Let's roll up our sleeves and solve this. We have 127 and we're going to multiply it by 27, essentially adding 127 to itself 27 times.
Step 1: 0 + 127 = 127
Step 2: 127 + 127 = 254
Step 3: 254 + 127 = 381
Step 4: 381 + 127 = 508
Step 5: 508 + 127 = 635
Step 6: 635 + 127 = 762
Step 7: 762 + 127 = 889
Step 8: 889 + 127 = 1016
Step 9: 1016 + 127 = 1143
Step 10: 1143 + 127 = 1270
Step 11: 1270 + 127 = 1397
Step 12: 1397 + 127 = 1524
Step 13: 1524 + 127 = 1651
Step 14: 1651 + 127 = 1778
Step 15: 1778 + 127 = 1905
Step 16: 1905 + 127 = 2032
Step 17: 2032 + 127 = 2159
Step 18: 2159 + 127 = 2286
Step 19: 2286 + 127 = 2413
Step 20: 2413 + 127 = 2540
Step 21: 2540 + 127 = 2667
Step 22: 2667 + 127 = 2794
Step 23: 2794 + 127 = 2921
Step 24: 2921 + 127 = 3048
Step 25: 3048 + 127 = 3175
Step 26: 3175 + 127 = 3302
Step 27: 3302 + 127 = 3429

So, 127*27 = 3429