Alright, let's work through 5578 times 4089 step by step
5578 × 4089 = 4089 × (5578)
+ 4089 × 8 resulting in 32712
+ 4089 × 70 which equals 286230
+ 4089 × 500 which equals 2044500
+ 4089 × 5000 what gives us 20445000

= 22808442
