Alright, let's work through 1994 times 9157 step by step
1994 × 9157 = 9157 × (1994)
+ 9157 × 4 that results in 36628
+ 9157 × 90 giving us 824130
+ 9157 × 900 resulting in 8241300
+ 9157 × 1000 giving us 9157000

= 18259058
