evaluation - Apply a style to a selected structure

If I type out, in my notes, a series of transformations, I often like to convert the very last step to a Framed equation:

enter image description here

I'm currently doing this by:

selecting the last expression,

copying it,

pasting it in a new field,

adding Framed[ … ] and evaluating,

copying the result,

pasting it back in the original field.

Is there a hotkey or quick way for me to apply a transformation to a selection, replacing it with the result? (Or something like that.)

Thanks!

Answer

Ctrl+Shift+Enter is the keyboard shortcut for "evaluate in place", which you press after highlighting an expression; this should ease your task. – J. M.♦ 2 mins ago

Notice I used Defer, it holds its arguments and is stripped when boxes are created. Exactly what we need keep e.g. 1 + 1 in this form.

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