I transcribe this *Jane Street Trading Mock Interview with Graham (G henceforth) and [Andrea
Zhang]* (AZ)](https://www.linkedin.com/in/andrea-zhang-32a238171), dated November 8th 2022,
starting at [14:00/25:42](https://youtu.be/NT_I1MjckaU?si=Z6xkdn5eNGq3RBLh). please elaborate this "cute way" to skip the algebra? why does this "cute way" work "to skip the algebra"?
>G: And I guess there is a cute way to see this.
So, you, I think, calculated that you were gonna make about $500 dollars over 100 turns, right? So how much money can you make each turn, roughly?
>A: 5 bucks.
>
>G: So, should you spend a turn picking up a 7?
>
>A: OHHHH!!!
>
>G: Yea!
>
>A: That makes a lot of sense.
>
>G: That way, you get to skip the algebra.
>
>A: That’s really nice.