Alright, let's work through 1980 times 9164 step by step
1980 × 9164 = 9164 × (1980)
+ 9164 × 0 that is equal 0
+ 9164 × 80 giving us 733120
+ 9164 × 900 that is equal 8247600
+ 9164 × 1000 giving us 9164000

= 18144720
