title: Calculate bacteria number program in python
body: <p>Bacteria B replicates itself each 2 minutes, write a program that asks users to enter two numbers: the initial B bacteria number and a period of time (in minutes). Calculate and print out the total number of B bacteria after this period.</p>
  
  <p>How to do. I did like below but the result is wrong. Because bateria replicates itself each 2 minutes then I multiply it with time.</p>
  
  <pre><code>b = int(input('How many B Bacterias are there? '))
  t = int(input('How much time will we waits (minutes)? '))
  r = b * 2 * t
  print ('After',t,'minutes(s) we would have',r,'B Bacterias')
  </code></pre>
  
  <p><a href="http://i.stack.imgur.com/9ROeS.png" rel="nofollow">See the image here</a></p>