Alright, let's work through 72799979 times 86425907 step by step
72799979 × 86425907 = 86425907 × (72799979)
+ 86425907 × 9 yielding 777833163
+ 86425907 × 70 what gives us 6049813490
+ 86425907 × 900 that is equal 77783316300
+ 86425907 × 9000 that results in 777833163000
+ 86425907 × 90000 producing 7778331630000
+ 86425907 × 700000 that equals 60498134900000
+ 86425907 × 2000000 that equals 172851814000000
+ 86425907 × 70000000 producing 6049813490000000

= 6291804214655953
