This was based on the difference in total student budget (including living expenses) for both schools: $55k per year for in-state UCF, $100k per year for Stanford (+$7k if living off campus).
https://med.ucf.edu/media/2018/08/COA-Tables-for-Website-1.pdf
http://med.stanford.edu/md/financial-aid/fa-basics/budget/_jcr_content/main/panel_builder/panel_1/download_449405499/file.res/2020-21%20COA%20-%20Budget_Ver%202.pdf