Y add -6.3100000000000005 mul add mul 63.6 inv add 9.3 mul -0.35100000000000003 x_1 mul -48.800000000000004 x_2 div sub mul -29.400000000000002 x_3 mul 0.616 x_1 div sub mul 99.10000000000001 inv add 8.35 mul -0.169 x_2 mul -0.291 x_4 x_0