iPhone app exam_calculate

This is a calculator that can verify the calculation, halfway formula.
The purpose is to make it possible for supervisors such as learning instructors to easily find the place of calculation errors.

[Major features]

1.
In the standard mode, the way formula of calculation is displayed.

2.
You can change how many decimal places are calculated by pressing the arrow button.

3).
You can also use it like a regular calculator by clicking the calculation result display part (it can calculate continuously)

Please do not use it unless the student can not find a place of calculation error by any means (calculating power will be lost).,

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