HP 12c question

Please don’t laugh at me if the question is too simple, I’m new to the financial caculator. When it comes to chain caculation, I have a problem, for example (25+35) / [(3+4)+(5+8)-(3-2)] (I know the easiest way is to cacualate the demoniator first to get the result then divided by the numerator ) But if I wanna use STO function, what should I do? please show me step by step . thanks

You don’t need the STO function. 25 Enter 35 + 3 Enter 4 + 5 Enter 8 + + 3 Enter 2 - - / 3.158

got it. thank you very much!!