Alright, let's work through 77279009 times 40619341 step by step
77279009 × 40619341 = 40619341 × (77279009)
+ 40619341 × 9 that results in 365574069
+ 40619341 × 00 that is equal 0
+ 40619341 × 000 that is equal 0
+ 40619341 × 9000 producing 365574069000
+ 40619341 × 70000 yielding 2843353870000
+ 40619341 × 200000 what gives us 8123868200000
+ 40619341 × 7000000 yielding 284335387000000
+ 40619341 × 70000000 what gives us 2843353870000000

= 3139022418713069
