Perhaps this will work for you?
<b>Sheet1</b><br /><br /><table border="1" cellspacing="0" cellpadding="0" style="font-family:Calibri,Arial; font-size:11pt; background-color:#ffffff; padding-left:2pt; padding-right:2pt; "> <colgroup><col style="font-weight:bold; width:30px; " /><col style="width:75px;" /><col style="width:70px;" /><col style="width:23px;" /><col style="width:50px;" /><col style="width:115px;" /><col style="width:64px;" /></colgroup><tr style="background-color:#cacaca; text-align:center; font-weight:bold; font-size:8pt; "><td > </td><td >A</td><td >B</td><td >C</td><td >D</td><td >E</td><td >F</td></tr><tr style="height:18px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >1</td><td >Employees</td><td style="text-align:center; ">Hire Date</td><td > </td><td > </td><td >Three Employees</td><td style="text-align:center; ">Days</td></tr><tr style="height:18px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >2</td><td >Tim</td><td style="text-align:center; ">1/5/2001</td><td > </td><td style="text-align:right; ">1</td><td >Tim</td><td style="text-align:center; ">3751</td></tr><tr style="height:18px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >3</td><td >Jane</td><td style="text-align:center; ">8/25/2005</td><td > </td><td style="text-align:right; ">2</td><td >Sally</td><td style="text-align:center; ">497</td></tr><tr style="height:18px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >4</td><td >Sally</td><td style="text-align:center; ">12/3/2009</td><td > </td><td style="text-align:right; ">3</td><td >Steve</td><td style="text-align:center; ">1020</td></tr><tr style="height:18px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >5</td><td >Bob</td><td style="text-align:center; ">4/9/2004</td><td > </td><td > </td><td >Average Tenure:</td><td style="text-align:center; ">1756</td></tr><tr style="height:18px ;" ><td style="font-size:8pt; background-color:#cacaca; text-align:center; " >6</td><td >Steve</td><td style="text-align:center; ">6/28/2008</td><td > </td><td > </td><td > </td><td > </td></tr></table><br /><table style="font-family:Arial; font-size:10pt; border-style: groove ;border-color:#00ff00;background-color:#fffcf9; color:#000000; "><tr><td ><b>Spreadsheet Formulas</b></td></tr><tr><td ><table border = "1" cellspacing="0" cellpadding="2" style="font-family:Arial; font-size:9pt;"><tr style="background-color:#cacaca; font-size:10pt;"><td >Cell</td><td >Formula</td></tr><tr><td >F2</td><td >=IFERROR(TODAY<span style=' color:008000; '>()</span>-VLOOKUP<span style=' color:008000; '>(E2,$A$1:$B$6,2,FALSE)</span>,"")</td></tr><tr><td >F3</td><td >=IFERROR(TODAY<span style=' color:008000; '>()</span>-VLOOKUP<span style=' color:008000; '>(E3,$A$1:$B$6,2,FALSE)</span>,"")</td></tr><tr><td >F4</td><td >=IFERROR(TODAY<span style=' color:008000; '>()</span>-VLOOKUP<span style=' color:008000; '>(E4,$A$1:$B$6,2,FALSE)</span>,"")</td></tr><tr><td >F5</td><td >=AVERAGE(F2:F4)</td></tr></table></td></tr></table>