title: Divide every number in every column by 1000 in R
body: <p>I would like to divide every number in all columns by 1000. I would like to omit the row header and the 1st column from this function. </p>
  
  <p>I have tried this code:</p>
  
  <pre><code> TEST2=(TEST[2:503,]/(1000))
  </code></pre>
  
  <p>But it is not what I am looking for. My dataframe has 503 columns. </p>