[netizensmith]

Go the whole hog and have an "Of" button on the calculator. Then we can type 100 + 10% "Of" 100 =

[felixcbb]

Haha, this comforts me in my decision of keeping that trusty old HP calculator right on my desk. It uses RPN notation so you feed it with the numbers and operations the way that you would solve the problem, not the way that you write it on paper. But yeah that was too much effort for the majority because you first had to read instructions on how to operate it. They lost their market share.

[TheScionicMan]

Maybe this BT mouse will solve the problem:

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