Alright, let's work through 80085532 times 1635648 step by step
80085532 × 1635648 = 1635648 × (80085532)
+ 1635648 × 2 giving us 3271296
+ 1635648 × 30 that is equal 49069440
+ 1635648 × 500 which equals 817824000
+ 1635648 × 5000 that equals 8178240000
+ 1635648 × 80000 resulting in 130851840000
+ 1635648 × 000000 what gives us 0
+ 1635648 × 0000000 which equals 0
+ 1635648 × 80000000 yielding 130851840000000

= 130991740244736
