Smart calculator

Smart calculator. Calculator with support for the order of actions and brackets, floating point numbers are supported.
Calculator determines that until the number of open brackets is equal to the number of closed, and also after the operation symbol, the equal sign will not be available.
Smart calculator has two color schemes available in the settings: light and dark.
There is a ban on opening the brackets after a number, a period or a closed bracket, as well as some other prohibitions that allow you to more clearly determine the correctness of the expression.
Calculator contains protection against division by zero.
Calculator has a mechanism for responding to device screen rotation.