Y add 16.2 sub mul 23.5 div div x_4 mul x_0 div x_2 div x_6 add mul -0.47100000000000003 pow3 add 0.11900000000000001 mul -0.011 x_5 mul 0.548 pow2 add 7.5600000000000005 mul 0.721 mul x_4 x_8 mul x_3 x_7 mul -87.80000000000001 x_1