Alright, let's work through 79688811 times 10297970 step by step
79688811 × 10297970 = 10297970 × (79688811)
+ 10297970 × 1 what gives us 10297970
+ 10297970 × 10 that is equal 102979700
+ 10297970 × 800 what gives us 8238376000
+ 10297970 × 8000 that equals 82383760000
+ 10297970 × 80000 resulting in 823837600000
+ 10297970 × 600000 giving us 6178782000000
+ 10297970 × 9000000 which equals 92681730000000
+ 10297970 × 70000000 that results in 720857900000000

= 820632985013670
