Alright, let's work through 90444145 times 19937041 step by step
90444145 × 19937041 = 19937041 × (90444145)
+ 19937041 × 5 what gives us 99685205
+ 19937041 × 40 producing 797481640
+ 19937041 × 100 that results in 1993704100
+ 19937041 × 4000 giving us 79748164000
+ 19937041 × 40000 producing 797481640000
+ 19937041 × 400000 that is equal 7974816400000
+ 19937041 × 0000000 that results in 0
+ 19937041 × 90000000 that results in 1794333690000000

= 1803188627074945
