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:
Micro Instrumentation and Telemetry Systems
Table title:
MITS calculators
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Model </th><th colspan=1 rowspan=1 > Description </th><th colspan=1 rowspan=1 > Introduced </th><th colspan=1 rowspan=1 > Kit Price </th><th colspan=1 rowspan=1 > Assembled </th></tr>
<tr> <td colspan=1 rowspan=1 > 816 </td><td colspan=1 rowspan=1 > Desktop, 8-digit display, 16-digit calculations 4-function </td><td colspan=1 rowspan=1 > Nov. 1971 </td><td colspan=1 rowspan=1 > $179 </td><td colspan=1 rowspan=1 > $275 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1440 </td><td colspan=1 rowspan=1 > Desktop, 14-digit display, square root, memory </td><td colspan=1 rowspan=1 > Jun. 1972 </td><td colspan=1 rowspan=1 > $199.95 </td><td colspan=1 rowspan=1 > $249.95 </td></tr>
<tr> <td colspan=1 rowspan=1 > 816B </td><td colspan=1 rowspan=1 > Desktop, 8-digit display, 16-digit calculations, 4-function </td><td colspan=1 rowspan=1 > Jun. 1972 </td><td colspan=1 rowspan=1 > $149.95 </td><td colspan=1 rowspan=1 > $189.95 </td></tr>
<tr> <td colspan=1 rowspan=1 > 7400 </td><td colspan=1 rowspan=1 > Desktop, 14-digit scientific. Trig functions, 3- (7400A), 5- (7400B), or 7-level stack (7400C) </td><td colspan=1 rowspan=1 > Dec. 1972 </td><td colspan=1 rowspan=1 > $339.95 </td><td colspan=1 rowspan=1 > $419.95 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1206 </td><td class="highlighted"  colspan=1 rowspan=1 > Handheld, 6 digit display, 12-digit calculation, 4-function, </td><td colspan=1 rowspan=1 > Jan. 1973 </td><td colspan=1 rowspan=1 > $49.95 </td><td class="highlighted"  colspan=1 rowspan=1 > $59.95 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1209 </td><td colspan=1 rowspan=1 > Handheld, 9 digit display, 12-digit calculation, 4-function, </td><td colspan=1 rowspan=1 > Jan. 1973 </td><td colspan=1 rowspan=1 > $69.95 </td><td colspan=1 rowspan=1 > $79.95 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1212 </td><td colspan=1 rowspan=1 > Handheld, 12 digit, 4-function, </td><td colspan=1 rowspan=1 > Jan. 1973 </td><td colspan=1 rowspan=1 > $89.95 </td><td colspan=1 rowspan=1 > $99.95 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > 1230 </td><td class="highlighted"  colspan=1 rowspan=1 > Handheld, 12 digit display, 4-function, </td><td colspan=1 rowspan=1 > Jan. 1973 </td><td colspan=1 rowspan=1 > $89.95 </td><td class="highlighted"  colspan=1 rowspan=1 > $99.95 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1240 </td><td colspan=1 rowspan=1 > Handheld, 12 digit display, 4-function, memory </td><td colspan=1 rowspan=1 > Jan. 1973 </td><td colspan=1 rowspan=1 > $119.95 </td><td colspan=1 rowspan=1 > $149.95 </td></tr>
<tr> <td colspan=1 rowspan=1 > 7440 </td><td colspan=1 rowspan=1 > Desktop, 14-digit, scientific </td><td colspan=1 rowspan=1 > Mar. 1973 </td><td colspan=1 rowspan=1 > $199.95 </td><td colspan=1 rowspan=1 > $299.95 </td></tr>
<tr> <td colspan=1 rowspan=1 > Programmer </td><td colspan=1 rowspan=1 > 256 step programmer for 7440, 816, 1440, 908DM. </td><td colspan=1 rowspan=1 > Mar. 1973 </td><td colspan=1 rowspan=1 > $199.95 </td><td colspan=1 rowspan=1 > $299.95 </td></tr>
<tr> <td colspan=1 rowspan=1 > 150 </td><td colspan=1 rowspan=1 > Handheld, 8-digit, 4-function, square root, memory </td><td colspan=1 rowspan=1 > Aug. 1973 </td><td colspan=1 rowspan=1 > $119.95 </td><td colspan=1 rowspan=1 > $149.95 </td></tr>
<tr> <td colspan=1 rowspan=1 > 941M </td><td colspan=1 rowspan=1 > Handheld, 8-digit, 4-function, percent, metric conversions </td><td colspan=1 rowspan=1 > Jan. 1974 </td><td colspan=1 rowspan=1 > $129.95 </td><td colspan=1 rowspan=1 > $149.95 </td></tr>
<tr> <td colspan=1 rowspan=1 > 908M </td><td colspan=1 rowspan=1 > Handheld, 8-digit, 4-function, square root, memory </td><td colspan=1 rowspan=1 > Jan. 1974 </td><td colspan=1 rowspan=1 > $99.95 </td><td colspan=1 rowspan=1 > $129.95 </td></tr>
<tr> <td colspan=1 rowspan=1 > 605M </td><td colspan=1 rowspan=1 > Handheld, 6-digit, 4-function, percent </td><td colspan=1 rowspan=1 > Jan. 1974 </td><td colspan=1 rowspan=1 > $49.95 </td><td colspan=1 rowspan=1 > $59.95 </td></tr>
<tr> <td colspan=1 rowspan=1 > 905M </td><td colspan=1 rowspan=1 > Handheld, 8-digit, 4-function, percent </td><td colspan=1 rowspan=1 > Jan. 1974 </td><td colspan=1 rowspan=1 > $59.95 </td><td colspan=1 rowspan=1 > $69.95 </td></tr>
<tr> <td colspan=1 rowspan=1 > 908DM </td><td colspan=1 rowspan=1 > Desktop, 8-digit, 4-function, percent </td><td colspan=1 rowspan=1 > Feb. 1974 </td><td colspan=1 rowspan=1 > $129.95 </td><td colspan=1 rowspan=1 > $149.95 </td></tr>
</table>
Question:
How much does the six-digit model cost compared to the twelve-digit model?
Answer:
The six-digit model was $59.95 and the twelve-digit model was $99.95, $40 more expensive.