Alright, let's work through 77119780 times 90940799 step by step
77119780 × 90940799 = 90940799 × (77119780)
+ 90940799 × 0 producing 0
+ 90940799 × 80 resulting in 7275263920
+ 90940799 × 700 which equals 63658559300
+ 90940799 × 9000 resulting in 818467191000
+ 90940799 × 10000 giving us 909407990000
+ 90940799 × 100000 that results in 9094079900000
+ 90940799 × 7000000 that is equal 636585593000000
+ 90940799 × 70000000 what gives us 6365855930000000

= 7013334411904220
