how did you find the original number producing this outcome? how did you know it was 73567465519280238573 that leads to that event?
where is this info?

ffs...

where do people learn this one liner syntax i see everywhere?

my feeling exactly. i did this. how does one get to the one liners?

i have no idea how this works. any pointers/explanation?

they say so in the problem description

so how does one get from basic multiline solutions to this is my question.

how does one get tot he point where they can write these one liners.
Currently taking a computational thinking using pythin class.

but avoids storing values in alternative variables.