Malculator (Calculator)

This is a common calculator with nothing special, except that the name uses my initial.
I tried my best to eliminate language dependence, but there are some buttons cannot be represented by a symbol. Please inform me if you need translation on some buttons, such as "ClearAll", "SIN", and "RAN". I believe you would not have any problem with that if you can understand this description.
Unexpectedly, this application does not contain any spam, violence, or sex content.
No charge, no Ads forever.

There are some supported functions do not have buttons. A full list of functions can be found from here:
https://docs.google.com/a/mm90849491.com/spreadsheets/d/1Cb-eBaNs54qLVzcnJsrPlk-u115VRwdtRyzE5QhpBoM/edit?usp=sharing
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Does not support factorial between -0.86 to -0.99.
Precision of non-integer real number factorial calculation is up to three decimal points.
Precision of complex number factorial calculation is up to seven decimal points.