title: Format numbers in thousands (K) in Excel
body: <p>In MS Excel, I would like to format a number in order to show only thousands and with 'K' in from of it,
  so the number 123000 will be displayed in the cell as <strong>123K</strong></p>
  
  <p>It is easy to format to show only thousands (123), but I'd like to add the K symbol in case the number is > 1000.
  so one cell with number 123 will display <strong>123</strong>
  one cell with 123000 will show <strong>123K</strong></p>
  
  <p>Any idea how the format Cell -> custom filters can be used?</p>
  
  <p>Thanks!</p>