OK, let's crack this. We're given 997 and our task is to multiply it by 79. Essentially, we'll be adding 997 to itself 79 times.
Step 1: 0 + 997 = 997
Step 2: 997 + 997 = 1994
Step 3: 1994 + 997 = 2991
Step 4: 2991 + 997 = 3988
Step 5: 3988 + 997 = 4985
Step 6: 4985 + 997 = 5982
Step 7: 5982 + 997 = 6979
Step 8: 6979 + 997 = 7976
Step 9: 7976 + 997 = 8973
Step 10: 8973 + 997 = 9970
Step 11: 9970 + 997 = 10967
Step 12: 10967 + 997 = 11964
Step 13: 11964 + 997 = 12961
Step 14: 12961 + 997 = 13958
Step 15: 13958 + 997 = 14955
Step 16: 14955 + 997 = 15952
Step 17: 15952 + 997 = 16949
Step 18: 16949 + 997 = 17946
Step 19: 17946 + 997 = 18943
Step 20: 18943 + 997 = 19940
Step 21: 19940 + 997 = 20937
Step 22: 20937 + 997 = 21934
Step 23: 21934 + 997 = 22931
Step 24: 22931 + 997 = 23928
Step 25: 23928 + 997 = 24925
Step 26: 24925 + 997 = 25922
Step 27: 25922 + 997 = 26919
Step 28: 26919 + 997 = 27916
Step 29: 27916 + 997 = 28913
Step 30: 28913 + 997 = 29910
Step 31: 29910 + 997 = 30907
Step 32: 30907 + 997 = 31904
Step 33: 31904 + 997 = 32901
Step 34: 32901 + 997 = 33898
Step 35: 33898 + 997 = 34895
Step 36: 34895 + 997 = 35892
Step 37: 35892 + 997 = 36889
Step 38: 36889 + 997 = 37886
Step 39: 37886 + 997 = 38883
Step 40: 38883 + 997 = 39880
Step 41: 39880 + 997 = 40877
Step 42: 40877 + 997 = 41874
Step 43: 41874 + 997 = 42871
Step 44: 42871 + 997 = 43868
Step 45: 43868 + 997 = 44865
Step 46: 44865 + 997 = 45862
Step 47: 45862 + 997 = 46859
Step 48: 46859 + 997 = 47856
Step 49: 47856 + 997 = 48853
Step 50: 48853 + 997 = 49850
Step 51: 49850 + 997 = 50847
Step 52: 50847 + 997 = 51844
Step 53: 51844 + 997 = 52841
Step 54: 52841 + 997 = 53838
Step 55: 53838 + 997 = 54835
Step 56: 54835 + 997 = 55832
Step 57: 55832 + 997 = 56829
Step 58: 56829 + 997 = 57826
Step 59: 57826 + 997 = 58823
Step 60: 58823 + 997 = 59820
Step 61: 59820 + 997 = 60817
Step 62: 60817 + 997 = 61814
Step 63: 61814 + 997 = 62811
Step 64: 62811 + 997 = 63808
Step 65: 63808 + 997 = 64805
Step 66: 64805 + 997 = 65802
Step 67: 65802 + 997 = 66799
Step 68: 66799 + 997 = 67796
Step 69: 67796 + 997 = 68793
Step 70: 68793 + 997 = 69790
Step 71: 69790 + 997 = 70787
Step 72: 70787 + 997 = 71784
Step 73: 71784 + 997 = 72781
Step 74: 72781 + 997 = 73778
Step 75: 73778 + 997 = 74775
Step 76: 74775 + 997 = 75772
Step 77: 75772 + 997 = 76769
Step 78: 76769 + 997 = 77766
Step 79: 77766 + 997 = 78763

So, 997*79 = 78763