$ dc | number | speak
Playing around with
dc(1), that I always found hard to understand, I noticed 'p' was obviously very common to print something on the screen at that time.
Got a new boost of motivation and studied its cryptic manpage once again.
Made some useful progress and can finally drop my pocket calculator.
In the future I will only be doing like: "Hey computer, how many bytes are there in 24GiB of RAM?"
...and the answer will be
dc -e '2 30 ^ 24 * p' | number | espeak
It feels good to get my head around tools that used to be like Chinese to me