Alright, let's work through 71393481 times 78443429 step by step
71393481 × 78443429 = 78443429 × (71393481)
+ 78443429 × 1 giving us 78443429
+ 78443429 × 80 producing 6275474320
+ 78443429 × 400 giving us 31377371600
+ 78443429 × 3000 that results in 235330287000
+ 78443429 × 90000 that equals 7059908610000
+ 78443429 × 300000 what gives us 23533028700000
+ 78443429 × 1000000 resulting in 78443429000000
+ 78443429 × 70000000 that results in 5491040030000000

= 5600349457886349
