Alright, let's work through 71300664 times 83760741 step by step
71300664 × 83760741 = 83760741 × (71300664)
+ 83760741 × 4 that is equal 335042964
+ 83760741 × 60 what gives us 5025644460
+ 83760741 × 600 that results in 50256444600
+ 83760741 × 0000 giving us 0
+ 83760741 × 00000 that equals 0
+ 83760741 × 300000 what gives us 25128222300000
+ 83760741 × 1000000 which equals 83760741000000
+ 83760741 × 70000000 yielding 5863251870000000

= 5972196450432024
