Calcuter

 def mortgage_calculator(principal, interest, years):

    """

    Calculates the monthly mortgage payment based on principal, interest, and years.

    

    :param principal: The total amount of the loan (in dollars)

    :param interest: The annual interest rate (as a decimal)

    :param years: The number of years the loan will be paid over

    

    :return: The monthly mortgage payment (in dollars)

    """

    # Convert the annual interest rate to a monthly interest rate

    monthly_interest_rate = interest / 12

    

    # Calculate the number of monthly payments

    num_payments = years * 12

    

    # Calculate the monthly mortgage payment

    monthly_payment = principal * (monthly_interest_rate / (1 - (1 + monthly_interest_rate)**(-num_payments)))

    

    return monthly_payment