Alright, let's work through 83496255 times 78645271 step by step
83496255 × 78645271 = 78645271 × (83496255)
+ 78645271 × 5 that results in 393226355
+ 78645271 × 50 that results in 3932263550
+ 78645271 × 200 that is equal 15729054200
+ 78645271 × 6000 giving us 471871626000
+ 78645271 × 90000 producing 7078074390000
+ 78645271 × 400000 that equals 31458108400000
+ 78645271 × 3000000 giving us 235935813000000
+ 78645271 × 80000000 yielding 6291621680000000

= 6566585601960105
