x = (float)(input("x: "))
y = (float)(input("y: "))

print(f"x + y = {x + y}")
print(f"x - y = {x - y}")
print(f"x * y = {x * y}")
print(f"x / y = {x / y}")

z = x / y
print(f"x / y = {z:.50f}")