Alright, let's work through 80518007 times 21499274 step by step
80518007 × 21499274 = 21499274 × (80518007)
+ 21499274 × 7 yielding 150494918
+ 21499274 × 00 resulting in 0
+ 21499274 × 000 what gives us 0
+ 21499274 × 8000 what gives us 171994192000
+ 21499274 × 10000 resulting in 214992740000
+ 21499274 × 500000 giving us 10749637000000
+ 21499274 × 0000000 resulting in 0
+ 21499274 × 80000000 resulting in 1719941920000000

= 1731078694426918
