title: Reading multiple numbers from a text file
body: <p>I am new to programming in python and need help doing this.</p>
  
  <p>I have a text file with several numbers like this:</p>
  
  <pre><code>12 35 21
  123 12 15
  12 18 89
  </code></pre>
  
  <p>I need to be able to read the individual numbers of each line to be able to use them in mathematical formulas.</p>