Alright, let's work through 40199346 times 81248036 step by step
40199346 × 81248036 = 81248036 × (40199346)
+ 81248036 × 6 that equals 487488216
+ 81248036 × 40 what gives us 3249921440
+ 81248036 × 300 resulting in 24374410800
+ 81248036 × 9000 that is equal 731232324000
+ 81248036 × 90000 that is equal 7312323240000
+ 81248036 × 100000 yielding 8124803600000
+ 81248036 × 0000000 giving us 0
+ 81248036 × 40000000 which equals 3249921440000000

= 3266117910984456
