Whats wrong with my python program : <h1>tip and tax calculator</h1>

<pre><code>bill = price + tax + tip

price = raw_input("What is the price of the meal")

tax = price * .06

tip = price * 0.20
</code></pre>

<p>what is wrong with my code
I have tried everything 
please answer and get back to me</p>
