Alright, let's work through 82171720 times 80833842 step by step
82171720 × 80833842 = 80833842 × (82171720)
+ 80833842 × 0 yielding 0
+ 80833842 × 20 giving us 1616676840
+ 80833842 × 700 that results in 56583689400
+ 80833842 × 1000 yielding 80833842000
+ 80833842 × 70000 producing 5658368940000
+ 80833842 × 100000 producing 8083384200000
+ 80833842 × 2000000 that is equal 161667684000000
+ 80833842 × 80000000 giving us 6466707360000000

= 6642255831348240
