Calculation with Fractions
This calculator allows to perform the four basic arithmetic operations and exponentiation with fractions. The numerator and denominator of a fraction are entered separately. To switch from one field to another press the TAB key or click the desired input field.
The buttons Clear Entry 
and All Clear 
clears the last input or all inputs.
You can enter your data with the mouse or the keyboard, following the rules of algebraic hierarchy.
The second display allows you to view the results as mixed numbers, as decimals or as percentages.
Example:
9/16 + 24/5 = 429/80
resp. 5 29/80 ; resp. 5,3625 ; resp. 536,25 %