Alright, let's work through 79667895 times 21902975 step by step
79667895 × 21902975 = 21902975 × (79667895)
+ 21902975 × 5 that is equal 109514875
+ 21902975 × 90 that results in 1971267750
+ 21902975 × 800 resulting in 17522380000
+ 21902975 × 7000 which equals 153320825000
+ 21902975 × 60000 yielding 1314178500000
+ 21902975 × 600000 what gives us 13141785000000
+ 21902975 × 9000000 that results in 197126775000000
+ 21902975 × 70000000 giving us 1533208250000000

= 1744963912487625
