Let's calculate 1998 x 9172
1998 × 9172 = 9172 × (1998)
+ 9172 × 8 that results in 73376
+ 9172 × 90 that equals 825480
+ 9172 × 900 that is equal 8254800
+ 9172 × 1000 which equals 9172000

= 18325656
