title: EPPlus calculation not working
body: <p>I am using c# and EPPlus to calculate bunch of sums. I am trying to apply a formula to a row as well as bunch of individual cells. However, my current way is not calculating the formula. When I use the value method it just posts the value as string and doesn't calculate either.</p>
  
  <pre><code>//=SUM(E123+G123+H123+I123) -F123
  //=SUMIFS($P$4:$P$1000,$C$4:$C$1000,Q2,$A$4:$A$1000, $R2)
  
  string formula = "= 2 *2";
              //double f = double.Parse(formula);
         // ws.Cells["q4"].Value = formula;
         ws.Cells["q4"].Formula =formula;
          ws.Cells["q4"].Style.Numberformat.Format = "#,##0";
          ws.Workbook.CalcMode = ExcelCalcMode.Automatic;
          ws.Cells["q4"].Calculate();
  
  
          if (ws.Cells["q4"].Value.ToString() != null)
          {
              string test = ws.Cells["q4"].Value.ToString();
              MessageBox.Show("the value :" + test);
          }
          else
          {
              MessageBox.Show("not working" );
          }
  </code></pre>