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:
German submarine U-409
Table title:
Summary of raiding history
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Date </th><th colspan=1 rowspan=1 > Name </th><th colspan=1 rowspan=1 > Nationality </th><th colspan=1 rowspan=1 > Tonnage </th><th colspan=1 rowspan=1 > Fate </th></tr>
<tr> <td colspan=1 rowspan=1 > 30 October 1942 </td><td colspan=1 rowspan=1 > Bullmouth </td><td colspan=1 rowspan=1 > United Kingdom </td><td class="highlighted"  colspan=1 rowspan=1 > 7,519 </td><td class="highlighted"  colspan=1 rowspan=1 > Damaged </td></tr>
<tr> <td colspan=1 rowspan=1 > 30 October 1942 </td><td colspan=1 rowspan=1 > Silverwillow </td><td colspan=1 rowspan=1 > United Kingdom </td><td class="highlighted"  colspan=1 rowspan=1 > 6,373 </td><td class="highlighted"  colspan=1 rowspan=1 > Sunk </td></tr>
<tr> <td colspan=1 rowspan=1 > 9 March 1943 </td><td colspan=1 rowspan=1 > Malantic </td><td colspan=1 rowspan=1 > United States </td><td class="highlighted"  colspan=1 rowspan=1 > 3,837 </td><td class="highlighted"  colspan=1 rowspan=1 > Sunk </td></tr>
<tr> <td colspan=1 rowspan=1 > 9 March 1943 </td><td colspan=1 rowspan=1 > Rosewood </td><td colspan=1 rowspan=1 > United Kingdom </td><td class="highlighted"  colspan=1 rowspan=1 > 5,989 </td><td class="highlighted"  colspan=1 rowspan=1 > Sunk </td></tr>
<tr> <td colspan=1 rowspan=1 > 4 July 1943 </td><td colspan=1 rowspan=1 > City of Venice </td><td colspan=1 rowspan=1 > United Kingdom </td><td class="highlighted"  colspan=1 rowspan=1 > 8,762 </td><td class="highlighted"  colspan=1 rowspan=1 > Sunk </td></tr>
<tr> <td colspan=1 rowspan=1 > 4 July 1943 </td><td colspan=1 rowspan=1 > HMS LCE-14 </td><td colspan=1 rowspan=1 > Royal Navy </td><td colspan=1 rowspan=1 > 10 </td><td class="highlighted"  colspan=1 rowspan=1 > Sunk (transported on board City of Venice) </td></tr>
</table>
Question:
For how much gross register tons (GRT) did the German submarine U-409 sink and/or damaged ?
Answer:
German submarine U-409 sunk for a total of 24,961 gross register tons (GRT), 1 damaged with 7,519 GRT, and one sunk whilst being transported.