title: Show 2 digits after the decimal point instead of one
body: <p>I'm learning Python at the moment and I solved some easy coding challenges on hackerrank.com.
  But I don't know how to solve this one... The answer is right, but my result is for example 65.0 but hackerrank wants it to be 65.00... How can I add the second decimal number?</p>
  
  <pre><code>n = int(input())
  student_marks = {}
  for _ in range(n):
      name, *grades = input().split()
      scores = list(map(float, grades))
      student_marks[name] = scores
  
  query_name = input()
  average = (student_marks[query_name][0] + student_marks[query_name][1] + student_marks[query_name][2]) / 3
  
  print(average)
  </code></pre>