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:
Craig Vetter Fuel Economy Challenge
Table title:
Results
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Year </th><th colspan=1 rowspan=1 > Location </th><th colspan=1 rowspan=1 > Winner </th><th colspan=1 rowspan=1 > Fuel economy </th><th colspan=1 rowspan=1 > Model </th><th colspan=1 rowspan=1 > Notes </th></tr>
<tr> <td colspan=1 rowspan=1 > 1980 </td><td colspan=1 rowspan=1 > Colorado Springs–Cripple Creek, Colorado </td><td colspan=1 rowspan=1 > Lammy Johnstone </td><td colspan=1 rowspan=1 > 97.9 mpg‑US (2.40 L/100 km; 117.6 mpg‑imp) </td><td colspan=1 rowspan=1 > 1000 cc Harley-Davidson </td><td colspan=1 rowspan=1 >  </td></tr>
<tr> <td colspan=1 rowspan=1 > 1981 </td><td colspan=1 rowspan=1 > Templeton–Cambria, California </td><td colspan=1 rowspan=1 > Mike Hishki </td><td colspan=1 rowspan=1 > 189 mpg‑US (1.24 L/100 km; 227 mpg‑imp) </td><td colspan=1 rowspan=1 > Honda Passport </td><td colspan=1 rowspan=1 > Matt Guzzetta/Don Vesco "Project 200" streamliner entered, disqualified </td></tr>
<tr> <td colspan=1 rowspan=1 > 1982 </td><td colspan=1 rowspan=1 > San Luis Obispo–Monterey, California </td><td colspan=1 rowspan=1 > Charly Perethian </td><td colspan=1 rowspan=1 > 282 mpg‑US (0.83 L/100 km; 339 mpg‑imp) </td><td colspan=1 rowspan=1 > 185 cc 1982 Yamaha </td><td class="highlighted"  colspan=1 rowspan=2 > Vehicle now in Smithsonian </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1983 </td><td colspan=1 rowspan=1 > Carmel–Carmel, California </td><td class="highlighted"  colspan=1 rowspan=1 > Charly Perethian </td><td class="highlighted"  colspan=1 rowspan=1 > 372 mpg‑US (0.632 L/100 km; 447 mpg‑imp) </td><td class="highlighted"  colspan=1 rowspan=1 > 185 cc 1982 Yamaha </td></tr>
<tr> <td colspan=1 rowspan=1 > 1984 </td><td colspan=1 rowspan=1 > Carmel–Carmel </td><td colspan=1 rowspan=1 > Masakazu Matsuzawa </td><td colspan=1 rowspan=1 > 377 mpg‑US (0.624 L/100 km; 453 mpg‑imp) </td><td colspan=1 rowspan=1 > Honda XL 125 </td><td colspan=1 rowspan=1 > Record 557 mpg‑US (0.422 L/100 km; 669 mpg‑imp) achieved by Dan Hannebrink on first stage </td></tr>
<tr> <td colspan=1 rowspan=1 > 1985 </td><td colspan=1 rowspan=1 > Carmel–Big Sur–Laguna Seca </td><td colspan=1 rowspan=1 > Masakazu Matsuzawa </td><td colspan=1 rowspan=1 > 470 mpg‑US (0.50 L/100 km; 560 mpg‑imp) </td><td colspan=1 rowspan=1 > 1980 Honda XL 80 </td><td colspan=1 rowspan=1 >  </td></tr>
</table>
Question:
How many miles per gallon did Charly's Perethian's motorcycle achieve at the 1983 challenge?
Answer:
A motorcycle designed by Charly Perethian with a 185 cc Yamaha motor achieved 372 miles per US gallon (0.632 L/100 km; 447 mpg‑imp) at the 1983 challenge, and is now displayed in the Smithsonian.