=SE(B6<=30;B6*B$2;B6*B$3)
=SE(B6<=30;B6*B$2:SEB6>30);B6*B$3$)
=B6*B2
=SE(B6<30;B6*B$2$;B6*B$3$)
=SE(B6<=30;(B6*B$2);SENÃO(B6*B$3))