Alright, let's work through 5780 times 8545 step by step
5780 × 8545 = 8545 × (5780)
+ 8545 × 0 which equals 0
+ 8545 × 80 that results in 683600
+ 8545 × 700 what gives us 5981500
+ 8545 × 5000 yielding 42725000

= 49390100
