title: Can't create a formula in excel to satisfy certain conditions
body: <p>I'm trying to create a formula in excel using IF condition so that it adds <code>6</code> to the beginning of an existing number starting with <code>0</code>, as in <code>0124685515</code>. However, when the number starts with <code>1</code>, the formula should add <code>60</code> to the beginning of the existing number. Otherwise, the number should be left untouched.</p>
  <p>To be more specific:</p>
  <p><code>124685515</code> will be <code>60124685515</code></p>
  <p><code>0124685515</code> will turn into <code>60124685515</code></p>
  <p><code>60124685515</code> should be <code>60124685515</code></p>
  <p>My current attempt:</p>
  <p><code>=IF(LEFT(A1,1)=0,&quot;6&quot;&amp;A1,IF(LEFT(A1,1)=1,&quot;60&quot;&amp;A1,A1))</code></p>
  <p>How can I modify the formula to meet the above conditions?</p>