If you press enter three times your whole stack will be filled with the number so you can do operations that drop the stack and since the top position works as an infinite supply of the value it holds, you'll always have the number in your stack. So 9 ENTER ENTER ENTER + + + + + etc should show all the multiples of 9 one by one.
Note: if you want to square your answer, or continue to square, press enter before you hit times again
If you press enter three times your whole stack will be filled with the number so you can do operations that drop the stack and since the top position works as an infinite supply of the value it holds, you'll always have the number in your stack. So 9 ENTER ENTER ENTER + + + + + etc should show all the multiples of 9 one by one.
You are the Dhar Mann of HP calculator content
Thank you. This is the nicest thing anyone has ever commented
So the fastest way to double a number is number ENTER +
Square root or square???? Really sloppy pronunciation. Sorry.