title: Get ZeroDivisionError: float division in python
body: <p>In the code below: highly simplified. I get <code>ZeroDivisionError: float division</code> 
  Any value below one gives errors. Other times 5/365 gives the error. 
  How do I fix? </p>
  
  <pre><code>import math
  
  def top(  t):
      return ((.3 / 2) * t) / (.3 * math.sqrt(t))
  
  
  t = 365/365
  top= top(t)
  print (top)
  </code></pre>