Alright, let's work through 39201475 times 79207899 step by step
39201475 × 79207899 = 79207899 × (39201475)
+ 79207899 × 5 what gives us 396039495
+ 79207899 × 70 yielding 5544552930
+ 79207899 × 400 that is equal 31683159600
+ 79207899 × 1000 what gives us 79207899000
+ 79207899 × 00000 producing 0
+ 79207899 × 200000 that is equal 15841579800000
+ 79207899 × 9000000 resulting in 712871091000000
+ 79207899 × 30000000 yielding 2376236970000000

= 3105066472451025
