Code:
user_num = int(input("user_num: "))
x = int(input("x: "))
print(user_num / x ** 3)
Explenation:
First, we make the user give us the values of user_num and x using the input() function. However, to later perform math with them, we first have to convert them into "int" using the int() function. Then we assign a variable to the values. At last we print user_num / x ** 3, since it's the same as dividing user_num by x three times.