title: Separate elements each cell in a dataframe in R
body: <p>I have an R dataframe, with each cell set up in the following format : number (number, number), as follows</p>
  <pre><code>#create dataframe as follows
  x &lt;- data.frame(&quot;Col1&quot; = c(&quot;0.4646 (0.4061, 0.7522)&quot;, &quot;0.4137 (0.0178, 0.617)&quot;), &quot;Col2&quot;= c(&quot;0.1996 (0.1383, 0.3499)&quot;, &quot;0.9814 (0.7092, 0.9884)&quot;), stringsAsFactors = FALSE)
  
  x[1,1]
  #&quot;0.4646 (0.4061, 0.7522)&quot;
  
  #I want 0.4646 to go in a column called &quot;Col1est&quot;
  #0.4061 should go in a column called &quot;Col1lower&quot;
  #0.7522 should go in a column called &quot;Col1Upper&quot;
  
  
  </code></pre>
  <p>For each entry of x, I want to separate it into 3 columns. The request is represented in the code. How do I extract the specific values from the parentheses and put them in new columns?</p>
  <p>~CEO</p>