print("Enter the first number:")
a = read()
print("Enter the second number:")
b = read()
print("Choose operation (+, -, *, /)")
operation = read()
if operation == "+" then
    print("Result ",a+b)
end
if operation == "-" then
    print("Result ",a-b)
end
if  operation == "*" then
    print("Result ",a*b)
end
if operation == "/" then
    print("Result ",a/b)
end