A simple calculator for performing mathematical operations on values ​​with two units simultaneously. This calculator can calculate dozen - pieces and codi - pieces.

Users can add their own combination of units, through the Custom Settings menu.

There are 6 functions in this calculator:
1. Add and Subtract dozen: add and subtract dozen - cut. Example: 25 dozen 10 pieces + 21 dozen 11 pieces.
2. Multiply dozen: the value of dozen and cut is multiplied by a regular number (decimal units). Example: 97 dozen 11 pieces x 375
3. Addition and Subtraction of scores: add and subtract scores. Example: 15 scores 12 pieces + 6 scores 15 pieces.
4. Multiplication of score: the value of the score and cut is multiplied by an ordinary number (decimal unit). Example: 2 codes 15 pieces x 100
5. Custom Addition and Subtraction: add and subtract custom units.
6. Custom multiplication: the value of the custom unit is multiplied by a regular number (decimal units).