=if(A1="专科",1200,if(A1="本科",1500,1800))=hlookup(A1,{"专科","本科","研究生";1200,1500,1800},2,0) =match(A1,{"专科","本科","研究生"},)*300+900
=IF(A1="专科",1200,IF(A1="本科",1500,IF(A1="研究生",1800,0)))