Code Practice: Question 4 Using The Prices.Txt Data File Find The Average Of The Values In The File Hint: Use A Calculator Or Excel To Cross-Check Your Code's Calculation Tasks Prices.Txt Question4. 3 28 Lad 4 Infile-Open( "Prices.Txt",) Checks 5 Line-Infile.Readline() Sp 6 Lin-Infile.Readline) Test CaseIncomplete Question 4-Output Sum- Num 9 While