title: Using "If cell contains #N/A" as a formula condition.
body: <p>I need help on my Excel sheet. How can I declare the following <code>IF</code> condition properly?</p>
  
  <pre><code>if A1 = "n/a" then C1 = B1
  else if A1 != "n/a" or has value(int) then C1 = A1*B1
  </code></pre>