title: perl regex ignore specific keywords
body: <p>I have following output:</p>
  
  <pre><code>22.0 MiB +  27.1 MiB =  49.2 MiB       process1
  78.9 MiB + 636.5 KiB =  79.5 MiB       process2
  </code></pre>
  
  <p>I need last to column so i am using following regex, I am putting (XX MiB values and processX in two group $1 and $2)</p>
  
  <pre><code>/([^=]+)\s([a-z].*)/
  </code></pre>
  
  <p>Result:</p>
  
  <pre><code>49.2 MiB
  79.5 MiB
  </code></pre>
  
  <p>I want to ignore/remove <code>MiB</code> in regex group how do i remove that? </p>