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:
Tbilisi Metro
Table title:
Network
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > No. </th><th colspan=1 rowspan=1 > Name </th><th colspan=1 rowspan=1 > Opened </th><th colspan=1 rowspan=1 > Length </th><th colspan=1 rowspan=1 > Stations </th></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1 </td><td colspan=1 rowspan=1 > Akhmeteli–Varketili Line </td><td colspan=1 rowspan=1 > 1966 </td><td colspan=1 rowspan=1 > 19.6 km (12.2 mi) </td><td colspan=1 rowspan=1 > 16 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 2 </td><td colspan=1 rowspan=1 > Saburtalo Line </td><td colspan=1 rowspan=1 > 1979 </td><td colspan=1 rowspan=1 > 7.7 km (4.8 mi) </td><td colspan=1 rowspan=1 > 7 </td></tr>
<tr> <td colspan=3 rowspan=1 > TOTAL: </td><td class="highlighted"  colspan=1 rowspan=1 > 27.3 km (17.0 mi) </td><td class="highlighted"  colspan=1 rowspan=1 > 23 </td></tr>
</table>
Question:
How many lines does the The Tbilisi Metro consist of and on how much total track?
Answer:
The Tbilisi Metro consists of two lines, serving 23 stations, operating on 27.3 kilometers (17.0 mi) of track.