OK, let's crack this. We're given 791 and our task is to multiply it by 47. Essentially, we'll be adding 791 to itself 47 times.
Step 1: 0 + 791 = 791
Step 2: 791 + 791 = 1582
Step 3: 1582 + 791 = 2373
Step 4: 2373 + 791 = 3164
Step 5: 3164 + 791 = 3955
Step 6: 3955 + 791 = 4746
Step 7: 4746 + 791 = 5537
Step 8: 5537 + 791 = 6328
Step 9: 6328 + 791 = 7119
Step 10: 7119 + 791 = 7910
Step 11: 7910 + 791 = 8701
Step 12: 8701 + 791 = 9492
Step 13: 9492 + 791 = 10283
Step 14: 10283 + 791 = 11074
Step 15: 11074 + 791 = 11865
Step 16: 11865 + 791 = 12656
Step 17: 12656 + 791 = 13447
Step 18: 13447 + 791 = 14238
Step 19: 14238 + 791 = 15029
Step 20: 15029 + 791 = 15820
Step 21: 15820 + 791 = 16611
Step 22: 16611 + 791 = 17402
Step 23: 17402 + 791 = 18193
Step 24: 18193 + 791 = 18984
Step 25: 18984 + 791 = 19775
Step 26: 19775 + 791 = 20566
Step 27: 20566 + 791 = 21357
Step 28: 21357 + 791 = 22148
Step 29: 22148 + 791 = 22939
Step 30: 22939 + 791 = 23730
Step 31: 23730 + 791 = 24521
Step 32: 24521 + 791 = 25312
Step 33: 25312 + 791 = 26103
Step 34: 26103 + 791 = 26894
Step 35: 26894 + 791 = 27685
Step 36: 27685 + 791 = 28476
Step 37: 28476 + 791 = 29267
Step 38: 29267 + 791 = 30058
Step 39: 30058 + 791 = 30849
Step 40: 30849 + 791 = 31640
Step 41: 31640 + 791 = 32431
Step 42: 32431 + 791 = 33222
Step 43: 33222 + 791 = 34013
Step 44: 34013 + 791 = 34804
Step 45: 34804 + 791 = 35595
Step 46: 35595 + 791 = 36386
Step 47: 36386 + 791 = 37177

So, 791*47 = 37177