Function:
1) Three kind of the calculators.
2) Any calculator can duplicate.
3) The value of screen can copy to another calculators.
4) The calculators have undo and redo function.
1) Three kind of the calculators.
2) Any calculator can duplicate.
3) The value of screen can copy to another calculators.
4) The calculators have undo and redo function.
9Apps 4.9
