OK, let's crack this. We're given 271 and our task is to multiply it by 78. Essentially, we'll be adding 271 to itself 78 times.
Step 1: 0 + 271 = 271
Step 2: 271 + 271 = 542
Step 3: 542 + 271 = 813
Step 4: 813 + 271 = 1084
Step 5: 1084 + 271 = 1355
Step 6: 1355 + 271 = 1626
Step 7: 1626 + 271 = 1897
Step 8: 1897 + 271 = 2168
Step 9: 2168 + 271 = 2439
Step 10: 2439 + 271 = 2710
Step 11: 2710 + 271 = 2981
Step 12: 2981 + 271 = 3252
Step 13: 3252 + 271 = 3523
Step 14: 3523 + 271 = 3794
Step 15: 3794 + 271 = 4065
Step 16: 4065 + 271 = 4336
Step 17: 4336 + 271 = 4607
Step 18: 4607 + 271 = 4878
Step 19: 4878 + 271 = 5149
Step 20: 5149 + 271 = 5420
Step 21: 5420 + 271 = 5691
Step 22: 5691 + 271 = 5962
Step 23: 5962 + 271 = 6233
Step 24: 6233 + 271 = 6504
Step 25: 6504 + 271 = 6775
Step 26: 6775 + 271 = 7046
Step 27: 7046 + 271 = 7317
Step 28: 7317 + 271 = 7588
Step 29: 7588 + 271 = 7859
Step 30: 7859 + 271 = 8130
Step 31: 8130 + 271 = 8401
Step 32: 8401 + 271 = 8672
Step 33: 8672 + 271 = 8943
Step 34: 8943 + 271 = 9214
Step 35: 9214 + 271 = 9485
Step 36: 9485 + 271 = 9756
Step 37: 9756 + 271 = 10027
Step 38: 10027 + 271 = 10298
Step 39: 10298 + 271 = 10569
Step 40: 10569 + 271 = 10840
Step 41: 10840 + 271 = 11111
Step 42: 11111 + 271 = 11382
Step 43: 11382 + 271 = 11653
Step 44: 11653 + 271 = 11924
Step 45: 11924 + 271 = 12195
Step 46: 12195 + 271 = 12466
Step 47: 12466 + 271 = 12737
Step 48: 12737 + 271 = 13008
Step 49: 13008 + 271 = 13279
Step 50: 13279 + 271 = 13550
Step 51: 13550 + 271 = 13821
Step 52: 13821 + 271 = 14092
Step 53: 14092 + 271 = 14363
Step 54: 14363 + 271 = 14634
Step 55: 14634 + 271 = 14905
Step 56: 14905 + 271 = 15176
Step 57: 15176 + 271 = 15447
Step 58: 15447 + 271 = 15718
Step 59: 15718 + 271 = 15989
Step 60: 15989 + 271 = 16260
Step 61: 16260 + 271 = 16531
Step 62: 16531 + 271 = 16802
Step 63: 16802 + 271 = 17073
Step 64: 17073 + 271 = 17344
Step 65: 17344 + 271 = 17615
Step 66: 17615 + 271 = 17886
Step 67: 17886 + 271 = 18157
Step 68: 18157 + 271 = 18428
Step 69: 18428 + 271 = 18699
Step 70: 18699 + 271 = 18970
Step 71: 18970 + 271 = 19241
Step 72: 19241 + 271 = 19512
Step 73: 19512 + 271 = 19783
Step 74: 19783 + 271 = 20054
Step 75: 20054 + 271 = 20325
Step 76: 20325 + 271 = 20596
Step 77: 20596 + 271 = 20867
Step 78: 20867 + 271 = 21138

So, 271*78 = 21138