Alright, let's work through 9879637 times 40566675 step by step
9879637 × 40566675 = 40566675 × (9879637)
+ 40566675 × 7 which equals 283966725
+ 40566675 × 30 what gives us 1217000250
+ 40566675 × 600 yielding 24340005000
+ 40566675 × 9000 producing 365100075000
+ 40566675 × 70000 that results in 2839667250000
+ 40566675 × 800000 giving us 32453340000000
+ 40566675 × 9000000 yielding 365100075000000

= 400784023296975
