I offer in case of entering the expression of 10-10%, a message 'not a valid expression ". If I need to subtract 10% I have to write a 10-10 / 100. I think that this is correct and understandable.
I offer in case of entering the expression of 10-10%, a message 'not a valid expression ". If I need to subtract 10% I have to write a 10-10 / 100. I think that this is correct and understandable.