Alright, let's work through 58778081 times 84871372 step by step
58778081 × 84871372 = 84871372 × (58778081)
+ 84871372 × 1 what gives us 84871372
+ 84871372 × 80 resulting in 6789709760
+ 84871372 × 000 what gives us 0
+ 84871372 × 8000 producing 678970976000
+ 84871372 × 70000 producing 5940996040000
+ 84871372 × 700000 what gives us 59409960400000
+ 84871372 × 8000000 which equals 678970976000000
+ 84871372 × 50000000 giving us 4243568600000000

= 4988576377997132
