Alright, let's work through 86942342 times 53974270 step by step
86942342 × 53974270 = 53974270 × (86942342)
+ 53974270 × 2 that is equal 107948540
+ 53974270 × 40 resulting in 2158970800
+ 53974270 × 300 resulting in 16192281000
+ 53974270 × 2000 resulting in 107948540000
+ 53974270 × 40000 that results in 2158970800000
+ 53974270 × 900000 yielding 48576843000000
+ 53974270 × 6000000 resulting in 323845620000000
+ 53974270 × 80000000 what gives us 4317941600000000

= 4692649441540340
