Alright, let's work through 40080927 times 8853309 step by step
40080927 × 8853309 = 8853309 × (40080927)
+ 8853309 × 7 yielding 61973163
+ 8853309 × 20 producing 177066180
+ 8853309 × 900 giving us 7967978100
+ 8853309 × 0000 producing 0
+ 8853309 × 80000 that results in 708264720000
+ 8853309 × 000000 giving us 0
+ 8853309 × 0000000 giving us 0
+ 8853309 × 40000000 giving us 354132360000000

= 354848831737443
