Alright, let's work through 78782742 times 15776207 step by step
78782742 × 15776207 = 15776207 × (78782742)
+ 15776207 × 2 resulting in 31552414
+ 15776207 × 40 that results in 631048280
+ 15776207 × 700 giving us 11043344900
+ 15776207 × 2000 yielding 31552414000
+ 15776207 × 80000 that equals 1262096560000
+ 15776207 × 700000 that is equal 11043344900000
+ 15776207 × 8000000 resulting in 126209656000000
+ 15776207 × 70000000 giving us 1104334490000000

= 1242892845819594
