Alright, let's work through 83526728 times 53674112 step by step
83526728 × 53674112 = 53674112 × (83526728)
+ 53674112 × 8 what gives us 429392896
+ 53674112 × 20 that equals 1073482240
+ 53674112 × 700 producing 37571878400
+ 53674112 × 6000 producing 322044672000
+ 53674112 × 20000 which equals 1073482240000
+ 53674112 × 500000 giving us 26837056000000
+ 53674112 × 3000000 resulting in 161022336000000
+ 53674112 × 80000000 resulting in 4293928960000000

= 4483222953665536
