Alright, let's work through 79988507 times 67370281 step by step
79988507 × 67370281 = 67370281 × (79988507)
+ 67370281 × 7 which equals 471591967
+ 67370281 × 00 that equals 0
+ 67370281 × 500 that is equal 33685140500
+ 67370281 × 8000 that is equal 538962248000
+ 67370281 × 80000 which equals 5389622480000
+ 67370281 × 900000 that equals 60633252900000
+ 67370281 × 9000000 resulting in 606332529000000
+ 67370281 × 70000000 producing 4715919670000000

= 5388848193360467
