Alright, let's work through 82706517 times 66586167 step by step
82706517 × 66586167 = 66586167 × (82706517)
+ 66586167 × 7 giving us 466103169
+ 66586167 × 10 resulting in 665861670
+ 66586167 × 500 that results in 33293083500
+ 66586167 × 6000 producing 399517002000
+ 66586167 × 00000 that is equal 0
+ 66586167 × 700000 that equals 46610316900000
+ 66586167 × 2000000 that is equal 133172334000000
+ 66586167 × 80000000 that is equal 5326893360000000

= 5507109952950339
