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:
Keisei Electric Railway
Table title:
Lines
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Line name </th><th colspan=1 rowspan=1 > Japanese </th><th colspan=1 rowspan=1 > Endpoints </th><th colspan=1 rowspan=1 > Distance (km) </th><th colspan=1 rowspan=1 > Type1 </th></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=2 > Main Line </td><td colspan=1 rowspan=2 > 本線 </td><td colspan=1 rowspan=1 > Keisei-Ueno – Komaino Junction </td><td colspan=1 rowspan=1 > 67.2 </td><td colspan=1 rowspan=1 > 1 </td></tr>
<tr> <td colspan=1 rowspan=1 > Komaino Junction – Narita Airport Terminal 1 </td><td colspan=1 rowspan=1 > 2.1 </td><td colspan=1 rowspan=1 > 2 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Oshiage Line </td><td colspan=1 rowspan=1 > 押上線 </td><td colspan=1 rowspan=1 > Oshiage – Aoto </td><td colspan=1 rowspan=1 > 5.7 </td><td colspan=1 rowspan=1 > 1 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Chiba Line </td><td colspan=1 rowspan=1 > 千葉線 </td><td colspan=1 rowspan=1 > Keisei-Tsudanuma – Chiba Chūō </td><td colspan=1 rowspan=1 > 12.9 </td><td colspan=1 rowspan=1 > 1 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Chihara Line </td><td colspan=1 rowspan=1 > 千原線 </td><td colspan=1 rowspan=1 > Chiba Chūō – Chiharadai </td><td colspan=1 rowspan=1 > 10.9 </td><td colspan=1 rowspan=1 > 1 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Higashi-Narita Line </td><td colspan=1 rowspan=1 > 東成田線 </td><td colspan=1 rowspan=1 > Keisei-Narita – Higashi-Narita </td><td colspan=1 rowspan=1 > 7.1 </td><td colspan=1 rowspan=1 > 1 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Kanamachi Line </td><td colspan=1 rowspan=1 > 金町線 </td><td colspan=1 rowspan=1 > Keisei-Takasago – Keisei-Kanamachi </td><td colspan=1 rowspan=1 > 2.5 </td><td colspan=1 rowspan=1 > 1 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Narita Airport Line (Narita Sky Access) </td><td colspan=1 rowspan=1 > 成田空港線 </td><td colspan=1 rowspan=1 > Keisei-Takasago – Narita Airport Terminal 1 </td><td colspan=1 rowspan=1 > 51.4 </td><td colspan=1 rowspan=1 > 2 </td></tr>
<tr> <td colspan=2 rowspan=2 > Overlap </td><td colspan=1 rowspan=1 > Keisei-Narita – Komaino Junction2 </td><td colspan=1 rowspan=1 > (6.0) </td><td colspan=1 rowspan=1 > 1 </td></tr>
<tr> <td colspan=1 rowspan=1 > Narita Airport Terminal 2·3 – Narita Airport Terminal 13 </td><td colspan=1 rowspan=1 > (1.0) </td><td colspan=1 rowspan=1 > 2 </td></tr>
<tr> <td colspan=3 rowspan=1 > Total </td><td class="highlighted"  colspan=1 rowspan=1 > 152.8 </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <th colspan=5 rowspan=1 > Projected lines </th></tr>
<tr> <td colspan=1 rowspan=1 > (Chihara Line extension) </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > Chiharadai – Amaariki </td><td colspan=1 rowspan=1 > 8.2 </td><td colspan=1 rowspan=1 > 1 </td></tr>
</table>
Question:
How many lines make up the Keisei Electric Railway and what is the total distance covered by the lines in total?
Answer:
Keisei operates 152.8 km of railway which consists of one trunk line named Main Line and six branch lines.