I'm very new to coding and I'm stuck on the cash problem set. It keeps returning a very high number and not returning cash. 
my code is below

    #include <cs50.h>
    #include <stdio.h>
    
    int get_cents(void);
    int calculate_quarters(int cents);
    int calculate_dimes(int cents);
    int calculate_nickels(int cents);
    int calculate_pennies(int cents);
    
    int main(void)
    {
        // Ask how many cents the customer is owed
        int cents = get_cents();
    
        // Calculate the number of quarters to give the customer
        int quarters = calculate_quarters(cents);
        cents = cents - quarters * 25;
    
        // Calculate the number of dimes to give the customer
        int dimes = calculate_dimes(cents);
        cents = cents - dimes * 10;
    
        // Calculate the number of nickels to give the customer
        int nickels = calculate_nickels(cents);
        cents = cents - nickels * 5;
    
        // Calculate the number of pennies to give the customer
        int pennies = calculate_pennies(cents);
        cents = cents - pennies * 1;
    
        // Sum coins
        int coins = quarters + dimes + nickels + pennies;
    
        // Print total number of coins to give the customer
        printf("%i\n", coins);
    }
    
    int get_cents(void)
    {
        int cents;
       do
       {
        cents = get_int("change owed: ");
       }
       while (cents <= 1);
       return cents;
    }
    
    int calculate_quarters(int cents)
    {
        int quarters;
    
        while (cents >= 25)
        {
          quarters = (cents / 25);
          quarters++;
        }
        return quarters;
    }
    
    int calculate_dimes(int cents)
    {
        // TODO
        int dimes;
    
        while(cents >= 10)
        {
            dimes = (cents / 10);
            dimes++;
        }
        return dimes;
    }
    
    int calculate_nickels(int cents)
    {
        // TODO
        int nickles;
    
        while(cents >= 5)
        {
           nickles = (cents / 5);
           nickles++;
        }
        return nickles;
    }
    
    int calculate_pennies(int cents)
    {
        // TODO
        int pennies;
    
        while(cents >= 1)
        {
            pennies = (cents / 1);
            pennies++;
        }
        return pennies;
    
    }