Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Thomas Fire
Table title:
Fire growth and containment progress
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Date </th><th colspan=1 rowspan=1 > Acres burned </th><th colspan=1 rowspan=1 > Containment </th></tr>
<tr> <td colspan=1 rowspan=1 > Dec 5 </td><td colspan=1 rowspan=1 > 50,000 </td><td colspan=1 rowspan=1 > 0% </td></tr>
<tr> <td colspan=1 rowspan=1 > Dec 6 </td><td colspan=1 rowspan=1 > 90,000 </td><td colspan=1 rowspan=1 > 5% </td></tr>
<tr> <td colspan=1 rowspan=1 > Dec 7 </td><td colspan=1 rowspan=1 > 115,000 </td><td colspan=1 rowspan=1 > 5% </td></tr>
<tr> <td colspan=1 rowspan=1 > Dec 8 </td><td colspan=1 rowspan=1 > 143,000 </td><td colspan=1 rowspan=1 > 10% </td></tr>
<tr> <td colspan=1 rowspan=1 > Dec 9 </td><td colspan=1 rowspan=1 > 155,000 </td><td colspan=1 rowspan=1 > 15% </td></tr>
<tr> <td colspan=1 rowspan=1 > Dec 10 </td><td colspan=1 rowspan=1 > 230,000 </td><td colspan=1 rowspan=1 > 10% </td></tr>
<tr> <td colspan=1 rowspan=1 > Dec 11 </td><td colspan=1 rowspan=1 > 231,700 </td><td colspan=1 rowspan=1 > 20% </td></tr>
<tr> <td colspan=1 rowspan=1 > Dec 12 </td><td colspan=1 rowspan=1 > 236,000 </td><td colspan=1 rowspan=1 > 25% </td></tr>
<tr> <td colspan=1 rowspan=1 > Dec 13 </td><td class="highlighted"  colspan=1 rowspan=1 > 238,500 </td><td colspan=1 rowspan=1 > 30% </td></tr>
<tr> <td colspan=1 rowspan=1 > Dec 14 </td><td class="highlighted"  colspan=1 rowspan=1 > 249,500 </td><td colspan=1 rowspan=1 > 35% </td></tr>
<tr> <td colspan=1 rowspan=1 > Dec 15 </td><td colspan=1 rowspan=1 > 256,000 </td><td colspan=1 rowspan=1 > 35% </td></tr>
<tr> <td colspan=1 rowspan=1 > Dec 16 </td><td colspan=1 rowspan=1 > 267,500 </td><td colspan=1 rowspan=1 > 40% </td></tr>
<tr> <td colspan=1 rowspan=1 > Dec 17 </td><td colspan=1 rowspan=1 > 270,000 </td><td colspan=1 rowspan=1 > 45% </td></tr>
<tr> <td colspan=1 rowspan=1 > Dec 18 </td><td colspan=1 rowspan=1 > 271,000 </td><td colspan=1 rowspan=1 > 50% </td></tr>
<tr> <td colspan=1 rowspan=1 > Dec 19 </td><td colspan=1 rowspan=1 > 272,000 </td><td colspan=1 rowspan=1 > 55% </td></tr>
<tr> <td colspan=1 rowspan=1 > Dec 20 </td><td colspan=1 rowspan=1 > 272,000 </td><td colspan=1 rowspan=1 > 60% </td></tr>
<tr> <td colspan=1 rowspan=1 > Dec 21 </td><td colspan=1 rowspan=1 > 272,600 </td><td colspan=1 rowspan=1 > 65% </td></tr>
<tr> <td colspan=1 rowspan=1 > Dec 22 </td><td colspan=1 rowspan=1 > 273,400 </td><td colspan=1 rowspan=1 > 65% </td></tr>
<tr> <td colspan=1 rowspan=1 > Dec 23 </td><td colspan=1 rowspan=1 > 273,400 </td><td colspan=1 rowspan=1 > 70% </td></tr>
<tr> <td colspan=1 rowspan=1 > Dec 24 </td><td colspan=1 rowspan=1 > 281,620 </td><td colspan=1 rowspan=1 > 86% </td></tr>
<tr> <td colspan=1 rowspan=1 > Dec 26 </td><td colspan=1 rowspan=1 > 281,620 </td><td colspan=1 rowspan=1 > 88% </td></tr>
<tr> <td colspan=1 rowspan=1 > Dec 27–28 </td><td colspan=1 rowspan=1 > 281,893 </td><td colspan=1 rowspan=1 > 91% </td></tr>
<tr> <td colspan=1 rowspan=1 > Dec 29–Jan 8 </td><td colspan=1 rowspan=1 > 281,893 </td><td colspan=1 rowspan=1 > 92% </td></tr>
<tr> <td colspan=1 rowspan=1 > Jan 9–11 </td><td colspan=1 rowspan=1 > -- </td><td colspan=1 rowspan=1 > -- </td></tr>
<tr> <td colspan=1 rowspan=1 > Jan 12 </td><td colspan=1 rowspan=1 > 281,893 </td><td colspan=1 rowspan=1 > 100% </td></tr>
</table>
Question:
How many acres did Thomas Fire expand to by December 14?
Answer:
Thomas Fire expanded to 249,500 acres.