please solve with racket

4. (25 points) Design and implement an accumulator style Racket function that consumes a list of intern as its parameter and concatenates the length of intern's name. The output must be in string type and the length of strings are separated by # sign. Example: If the list contains three intern structures and names of interns Ali, Veli, Tugba then output "3#4#5". (number-> string x) = string : Converts a number to a string. X: number (string-append s ...) string : Concatenates the characters of several strings. S: string (string-length s) - nat: Determines the length of a string. S: string