title: Google Sheets - How do multiply a SUM?
body: <p>Google Sheets is driving me insane
  <a href="https://i.stack.imgur.com/ooahB.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ooahB.png" alt="enter image description here"></a></p>
  
  <p>If I SUM up numbers from only one column and multiply by 2, I get 8, which is right:</p>
  
  <pre><code>=SUM(A:A)*2  
  </code></pre>
  
  <p>But when I add numbers from Column B like so, I get 6 as the answer, where I should be getting 14.</p>
  
  <pre><code>=SUM((A:A)*2,B:B)
  </code></pre>
  
  <p>Can someone explain to me what's wrong with my formula?</p>