title: How to rectify TypeError str not defined
body: <p>We must ask the user how many minutes they have used in a month, and multiply it by 0.10 to get the amount they have spent on minutes.</p>
  <p>Code:</p>
  <pre><code>mins = input(&quot;How many minutes have you used this month? &quot;)
  minsprice = float(mins)*0.10
  print (&quot;You have used&quot;,round(mins,2),&quot;GBP worth of minutes this month.&quot;)
  </code></pre>
  <p>It returns this error:</p>
  <pre><code>Traceback (most recent call last):
    File &quot;C:\Users\User\Downloads\assessment.py&quot;, line 23, in &lt;module&gt;
      print (&quot;You have used&quot;,float(round(mins,2)),&quot;GBP worth of minutes this month.&quot;)
  TypeError: type str doesn't define __round__ method
  </code></pre>