Alright, let's work through 79766684 times 90900728 step by step
79766684 × 90900728 = 90900728 × (79766684)
+ 90900728 × 4 resulting in 363602912
+ 90900728 × 80 resulting in 7272058240
+ 90900728 × 600 resulting in 54540436800
+ 90900728 × 6000 resulting in 545404368000
+ 90900728 × 60000 that results in 5454043680000
+ 90900728 × 700000 what gives us 63630509600000
+ 90900728 × 9000000 what gives us 818106552000000
+ 90900728 × 70000000 resulting in 6363050960000000

= 7250849645745952
