Here is some informations about Compact Calculator Map for Minecraft Frostburn that you can need before download it.

http://www.img.9minecraft.net/Map/Compact-Calculator-Map.jpg

Piston Powered Mechanical Calculator. The Calculatron 3000!

Can add or subtract any pair of two digit numbers up to a total of 999

Input 2 digit numbers e.g 02, 99

Wait for the numbers to spin up before entering another digit.

Download links for Compact Calculator Map:

http://www.mediafire.com/?c73vuqd4ru60f3j

http://www.dl2.9minecraft.net/index.php?act=dl&id=1357077962