算式為 0.15 * (貴價-最新價)/(貴價-淑價)
=IFERROR(GoogleFinance(CONCATENATE(A3,".TW"),"price"), value(SUBSTITUTE(index(importhtml(CONCATENATE("http://tw.stock.yahoo.com/q/q?s=",A3), "table",9),2,3),"*","")))
預期 ROE, 淑價, 貴價