Alright, let's work through 90571872 times 36921836 step by step
90571872 × 36921836 = 36921836 × (90571872)
+ 36921836 × 2 producing 73843672
+ 36921836 × 70 giving us 2584528520
+ 36921836 × 800 giving us 29537468800
+ 36921836 × 1000 that is equal 36921836000
+ 36921836 × 70000 giving us 2584528520000
+ 36921836 × 500000 which equals 18460918000000
+ 36921836 × 0000000 which equals 0
+ 36921836 × 90000000 that is equal 3322965240000000

= 3344079804196992
