Let's get this math done. We have 986 and we're going to multiply it by 18. This is the same as taking 986 and adding it to itself 18 times.
Step 1: 0 + 986 = 986
Step 2: 986 + 986 = 1972
Step 3: 1972 + 986 = 2958
Step 4: 2958 + 986 = 3944
Step 5: 3944 + 986 = 4930
Step 6: 4930 + 986 = 5916
Step 7: 5916 + 986 = 6902
Step 8: 6902 + 986 = 7888
Step 9: 7888 + 986 = 8874
Step 10: 8874 + 986 = 9860
Step 11: 9860 + 986 = 10846
Step 12: 10846 + 986 = 11832
Step 13: 11832 + 986 = 12818
Step 14: 12818 + 986 = 13804
Step 15: 13804 + 986 = 14790
Step 16: 14790 + 986 = 15776
Step 17: 15776 + 986 = 16762
Step 18: 16762 + 986 = 17748

So, 986*18 = 17748