Alright, let's work through 83209820 times 50987752 step by step
83209820 × 50987752 = 50987752 × (83209820)
+ 50987752 × 0 producing 0
+ 50987752 × 20 giving us 1019755040
+ 50987752 × 800 giving us 40790201600
+ 50987752 × 9000 producing 458889768000
+ 50987752 × 00000 that is equal 0
+ 50987752 × 200000 resulting in 10197550400000
+ 50987752 × 3000000 giving us 152963256000000
+ 50987752 × 80000000 that is equal 4079020160000000

= 4242681666124640
