def make_change(number1, number2):
    """number 1 = money given, number2 = cost of the bill. Program calculates money
    given back to the customer"""
    change_to_give = number1 - number2

    bill20 = 0
    bill10 = 0
    bill5 = 0
    coin100 = 0
    coin50 = 0
    coin20 = 0
    coin10 = 0
    coin5 = 0

    if change_to_give >= 20:
        while change_to_give >= 20:
            bill20 += 1
            change_to_give = change_to_give - 20

    if change_to_give >= 10:
        while change_to_give >= 10:
            bill10 += 1
            change_to_give = change_to_give - 10

    if change_to_give >= 5:
        while change_to_give >= 5:
            bill5 += 1
            change_to_give = change_to_give - 5

    if change_to_give >= 1:
        while change_to_give >= 1:
            coin100 += 1
            change_to_give = change_to_give - 1

    if change_to_give >= 0.5:
        while change_to_give >= 0.5:
            coin50 += 1
            change_to_give = change_to_give - 0.5

    if change_to_give >= 0.2:
        while change_to_give >= 0.2:
            coin20 += 1
            change_to_give = change_to_give - 0.2

    if change_to_give >= 0.1:
        while change_to_give >= 0.1:
            coin10 += 1
            change_to_give = change_to_give - 0.1

    if change_to_give >= 0.03:
        while change_to_give >= 0.035:
            coin5 += 1
            change_to_give = change_to_give - 0.035

    if bill20 > 0:
        print("20e :", bill20)
    if bill10 > 0:
        print("10e :", bill10)
    if bill5 > 0:
        print("5e :", bill5)
    if coin100 > 0:
        print("1e :", coin100)
    if coin50 > 0:
        print("0.5e :", coin50)
    if coin20 > 0:
        print("0.2e :", coin20)
    if coin10 > 0:
        print("0.1e :", coin10)
    if coin5 > 0:
        print("0.05e :", coin5)

    return print("Done: ", "Amount given back: ", change_to_given_total, "e"
                                                                         " Amount still to give: ", change_to_give)