Alright, let's work through 82103666 times 50381101 step by step
82103666 × 50381101 = 50381101 × (82103666)
+ 50381101 × 6 yielding 302286606
+ 50381101 × 60 that is equal 3022866060
+ 50381101 × 600 which equals 30228660600
+ 50381101 × 3000 which equals 151143303000
+ 50381101 × 00000 that is equal 0
+ 50381101 × 100000 producing 5038110100000
+ 50381101 × 2000000 resulting in 100762202000000
+ 50381101 × 80000000 producing 4030488080000000

= 4136473089216266
