Why did python add 1 at the end? console.log(9.89+3.48) = 13.37000000000001 : <p><a href="https://i.imgur.com/YYNhvNv.png" rel="nofollow noreferrer">https://i.imgur.com/YYNhvNv.png</a></p>

<p>Its adding in 1 at the end of that console log output. Why? 
Answer is suppose to be only 13.37</p>
