Let's roll up our sleeves and solve this. We have 978 and we're going to multiply it by 55, essentially adding 978 to itself 55 times.
Step 1: 0 + 978 = 978
Step 2: 978 + 978 = 1956
Step 3: 1956 + 978 = 2934
Step 4: 2934 + 978 = 3912
Step 5: 3912 + 978 = 4890
Step 6: 4890 + 978 = 5868
Step 7: 5868 + 978 = 6846
Step 8: 6846 + 978 = 7824
Step 9: 7824 + 978 = 8802
Step 10: 8802 + 978 = 9780
Step 11: 9780 + 978 = 10758
Step 12: 10758 + 978 = 11736
Step 13: 11736 + 978 = 12714
Step 14: 12714 + 978 = 13692
Step 15: 13692 + 978 = 14670
Step 16: 14670 + 978 = 15648
Step 17: 15648 + 978 = 16626
Step 18: 16626 + 978 = 17604
Step 19: 17604 + 978 = 18582
Step 20: 18582 + 978 = 19560
Step 21: 19560 + 978 = 20538
Step 22: 20538 + 978 = 21516
Step 23: 21516 + 978 = 22494
Step 24: 22494 + 978 = 23472
Step 25: 23472 + 978 = 24450
Step 26: 24450 + 978 = 25428
Step 27: 25428 + 978 = 26406
Step 28: 26406 + 978 = 27384
Step 29: 27384 + 978 = 28362
Step 30: 28362 + 978 = 29340
Step 31: 29340 + 978 = 30318
Step 32: 30318 + 978 = 31296
Step 33: 31296 + 978 = 32274
Step 34: 32274 + 978 = 33252
Step 35: 33252 + 978 = 34230
Step 36: 34230 + 978 = 35208
Step 37: 35208 + 978 = 36186
Step 38: 36186 + 978 = 37164
Step 39: 37164 + 978 = 38142
Step 40: 38142 + 978 = 39120
Step 41: 39120 + 978 = 40098
Step 42: 40098 + 978 = 41076
Step 43: 41076 + 978 = 42054
Step 44: 42054 + 978 = 43032
Step 45: 43032 + 978 = 44010
Step 46: 44010 + 978 = 44988
Step 47: 44988 + 978 = 45966
Step 48: 45966 + 978 = 46944
Step 49: 46944 + 978 = 47922
Step 50: 47922 + 978 = 48900
Step 51: 48900 + 978 = 49878
Step 52: 49878 + 978 = 50856
Step 53: 50856 + 978 = 51834
Step 54: 51834 + 978 = 52812
Step 55: 52812 + 978 = 53790

So, 978*55 = 53790