` (9!)/(4 ! 5 !)` परिकलन कीजिए :

Simplify the following: 4 4/5 div [2 1/5-1/2 {1 1/4-(1/4-1/5)}] निम्नलिखित को सरल कीजिए:- 4 4/5 div [2 1/5-1/2 {1 1/4-(1/4-1/5)}]

Evaluate (4!)/(3! 1!) × (9!)/(4!5!)