Alright, let's work through 71881371 times 70404393 step by step
71881371 × 70404393 = 70404393 × (71881371)
+ 70404393 × 1 which equals 70404393
+ 70404393 × 70 which equals 4928307510
+ 70404393 × 300 resulting in 21121317900
+ 70404393 × 1000 what gives us 70404393000
+ 70404393 × 80000 yielding 5632351440000
+ 70404393 × 800000 that equals 56323514400000
+ 70404393 × 1000000 that results in 70404393000000
+ 70404393 × 70000000 which equals 4928307510000000

= 5060764293262803
