I can figure out which algebra to use and what light research to perform... but may you please educate me on these "Fermi estimates" regarding salary negotiation?
"In physics or engineering education, a Fermi problem, Fermi quiz, Fermi question, or Fermi estimate is an estimation problem designed to teach dimensional analysis, approximation, and the importance of clearly identifying one's assumptions. The solution of such a problem is usually a back-of-the-envelope calculation."
This is not a problem where you need precision, just a reasonable level of accuracy and a well-presented argument.