Alright, let's work through 85373570 times 42421532 step by step
85373570 × 42421532 = 42421532 × (85373570)
+ 42421532 × 0 producing 0
+ 42421532 × 70 that results in 2969507240
+ 42421532 × 500 that equals 21210766000
+ 42421532 × 3000 yielding 127264596000
+ 42421532 × 70000 yielding 2969507240000
+ 42421532 × 300000 giving us 12726459600000
+ 42421532 × 5000000 what gives us 212107660000000
+ 42421532 × 80000000 yielding 3393722560000000

= 3621677631709240
