Alright, let's work through 80108480 times 98795447 step by step
80108480 × 98795447 = 98795447 × (80108480)
+ 98795447 × 0 that results in 0
+ 98795447 × 80 producing 7903635760
+ 98795447 × 400 resulting in 39518178800
+ 98795447 × 8000 giving us 790363576000
+ 98795447 × 00000 giving us 0
+ 98795447 × 100000 giving us 9879544700000
+ 98795447 × 0000000 yielding 0
+ 98795447 × 80000000 yielding 7903635760000000

= 7914353090090560
