我无法运行此程序[已关闭]

# Tipper Program
# User enters the bill total and the program computes two amounts,
# a 15 percent tip and a 20 percent tip

print("\t\t\t **  **  **  **  **  **  **  **  **  **")

print("\n\t\t\t\t    Tip Calculator")

print("\n\t\t\t **  **  **  **  **  **  **  **  **  **")

bill = input("\nPlease enter your restaurant's bill total: ")

tip_15 = bill * 0.15

tip_20 = bill * 0.20

float(print("\n\nA 15% tip for this bill comes out to ", tip_15))
float(print("\nA 20% tip for this bill comes out to ", tip_20))


input("\n\nPress the enter key to exit.")

在我输入账单总数后,应用程序一直关闭。有什么解决这个问题的建议吗?