Bc

This command is a binary calculator
Usage:      bc <calculations>
Example:    bc 1+2*3
Operators:  * + / % - ^
Functions:  sin random sqrt cos asin exp log negate tan atan acos
Constants:  EUR e pi
Some predesence rules cannot be determined so use parentheses where needed
example (2/4)*2
This is beta version. So do NOT use it to calculate your airplane's fuel
consumption or other similar things.