Analyze the code and fix the errors? 

Write a program that asks the user to enter five test scores. The program should display a letter grade for each score and the average test score. Write the following functions in the program:

calc_average - this function should accept five test scores as arguments and return the average of the scores.

determine_grade - this function should accept a test score as an argument and return a letter grade for the score, based on the following grading scale

90 - 100 A

80 - 89 B

70 - 79 C

60 - 69 D

below 60 F

Here is what I have (I copied and pasted it so I don't know if it will affect the indentation):

def main():

     grade1=int(input('Enter your first grade: '))
     grade2=int(input('Enter your second grade: '))
     grade3=int(input('Enter your third grade: '))
     grade4=int(input('Enter your fourth grade: '))
     grade5=int(input('Enter your fith grade: '))
 

     average=calc_average(grade1,grade2,grade3,grade4,grade5)
     print('Your average score is ', average)

     determine_grade(average)
 

     def calc_average(grade1,grade2,grade3,grade4,grade5):
     average_score = (grade1+grade2+grade3+grade4+grade5)/5
     return average_score

def determine_grade(score):

    if score < 60:
         print('your grade is an F')
     elif score >=60 and <=69:
         print('your grade is a D')
     elif score >=70 and <=79:
         print('your score is a C')
     elif score >=80 and <=89:
         print('your score is a B')
     elif score >=90 and <=100:
         print('your grade is an A')
     else:
         print('Error: you have not entered a number between 0 and 100.')
     return score
 
 

main()