Alright, let's work through 4321 times 5545 step by step
4321 × 5545 = 5545 × (4321)
+ 5545 × 1 what gives us 5545
+ 5545 × 20 giving us 110900
+ 5545 × 300 that is equal 1663500
+ 5545 × 4000 that results in 22180000

= 23959945
