title: How can I 'change in number' or 'change in digits' in Vim
body: <p>I'm regularly editing CSS in Vim and need to change a value like:</p>
  
  <pre><code>width: 300px;
  </code></pre>
  
  <p>to something else like:</p>
  
  <pre><code>width: 178px;
  </code></pre>
  
  <p>Normally what I do is navigate to the 3 in 300 and type <code>cw</code> to change the word. But if I do this I have to type the <code>px</code> bit again. Is there a short and quick way to say <code>change in digits</code>.</p>
  
  <p>In my searching I've discovered Ctrl-a and Ctrl-x to increment and decrement numbers in this situation. Is there an equivalent for being able to retype the number?</p>
  
  <p>I should clarify that the ideal solution would require the fewest keystrokes at time of operation and support modifications to different length numbers. Like if I wanted to change 300px to 17px.</p>