Alright, let's work through 85983797 times 40918256 step by step
85983797 × 40918256 = 40918256 × (85983797)
+ 40918256 × 7 giving us 286427792
+ 40918256 × 90 which equals 3682643040
+ 40918256 × 700 yielding 28642779200
+ 40918256 × 3000 giving us 122754768000
+ 40918256 × 80000 that equals 3273460480000
+ 40918256 × 900000 resulting in 36826430400000
+ 40918256 × 5000000 giving us 204591280000000
+ 40918256 × 80000000 which equals 3273460480000000

= 3518307017498032
