Where to find calculation on paper to repair mill?

[cynergy]

I'm stumped.

[🥀🆉🅰🆃🆃🅸🚯🤕]

follow the questline of "ms. charm".

[fizzgig]

You have to go see the old dude at the lighthouse- the Astronomer. He'll send you on errands before you can get the written calculations.