Alright, let's work through 78159696 times 88509004 step by step
78159696 × 88509004 = 88509004 × (78159696)
+ 88509004 × 6 yielding 531054024
+ 88509004 × 90 giving us 7965810360
+ 88509004 × 600 producing 53105402400
+ 88509004 × 9000 yielding 796581036000
+ 88509004 × 50000 what gives us 4425450200000
+ 88509004 × 100000 what gives us 8850900400000
+ 88509004 × 8000000 what gives us 708072032000000
+ 88509004 × 70000000 resulting in 6195630280000000

= 6917836845902784
