=IF(M2<0.5,25,IF(AND(0.5<=M2,M2<1),50,IF(AND(1<=M2,M2<1.5),75,IF(AND(1.5<=M2,M2<2),100,IF(AND(2<=M2,M2<2.5),125,IF(AND(2.5<=M2,M2<3),150,IF(AND(3<=M2,M2<3.5),175,IF(AND(3.5<=M2,M2<4),200,IF(AND(4<=M2,M2<4.5),225,IF(AND(4.5<=M2,M2<5),250,IF(AND(5<=M2,M2<5.5),275,IF(AND(5.5<=M2,M2<6),300,IF(AND(6<=M2,M2<6.5),325,IF(AND(6.5<=M2,M2<7),350,IF(AND(7<=M2,M2<7.5),375,IF(AND(7.5<=M2,M2<8),400,IF(AND(8<=M2,M2<8.5),425,IF(AND(8.5<=M2,M2<9),450,IF(AND(9<=M2,M2<9.5),475,500)))))))))))))))))))