Alright, let's work through 1973 times 9157 step by step
1973 × 9157 = 9157 × (1973)
+ 9157 × 3 that is equal 27471
+ 9157 × 70 what gives us 640990
+ 9157 × 900 yielding 8241300
+ 9157 × 1000 that results in 9157000

= 18066761
