Alright, let's work through 40395634 times 53716328 step by step
40395634 × 53716328 = 53716328 × (40395634)
+ 53716328 × 4 that is equal 214865312
+ 53716328 × 30 yielding 1611489840
+ 53716328 × 600 that equals 32229796800
+ 53716328 × 5000 resulting in 268581640000
+ 53716328 × 90000 producing 4834469520000
+ 53716328 × 300000 that is equal 16114898400000
+ 53716328 × 0000000 producing 0
+ 53716328 × 40000000 giving us 2148653120000000

= 2169905125711952
