print("Input the value of x:")
x = float(input())
print("Input the value of y:")
y = float(input())
z = x + y
print("x + y = {}".format(z))
z = x - y
print("x - y = {}".format(z))
z = x * y
print("x * y = {}".format(z))
z = x / y
print("x / y = {}".format(z))
