Alright, let's work through 82453945 times 66157752 step by step
82453945 × 66157752 = 66157752 × (82453945)
+ 66157752 × 5 what gives us 330788760
+ 66157752 × 40 producing 2646310080
+ 66157752 × 900 that is equal 59541976800
+ 66157752 × 3000 that is equal 198473256000
+ 66157752 × 50000 giving us 3307887600000
+ 66157752 × 400000 what gives us 26463100800000
+ 66157752 × 2000000 yielding 132315504000000
+ 66157752 × 80000000 yielding 5292620160000000

= 5454967644731640
