Alright, let's work through 82799919 times 66856240 step by step
82799919 × 66856240 = 66856240 × (82799919)
+ 66856240 × 9 resulting in 601706160
+ 66856240 × 10 yielding 668562400
+ 66856240 × 900 that equals 60170616000
+ 66856240 × 9000 that equals 601706160000
+ 66856240 × 90000 resulting in 6017061600000
+ 66856240 × 700000 producing 46799368000000
+ 66856240 × 2000000 resulting in 133712480000000
+ 66856240 × 80000000 that results in 5348499200000000

= 5535691256644560
