Alright, let's work through 80240709 times 38366784 step by step
80240709 × 38366784 = 38366784 × (80240709)
+ 38366784 × 9 producing 345301056
+ 38366784 × 00 that results in 0
+ 38366784 × 700 that is equal 26856748800
+ 38366784 × 0000 that is equal 0
+ 38366784 × 40000 resulting in 1534671360000
+ 38366784 × 200000 yielding 7673356800000
+ 38366784 × 0000000 what gives us 0
+ 38366784 × 80000000 producing 3069342720000000

= 3078577950209856
