Y add -92.30000000000001 div sub mul -0.359 x_1 mul -0.157 mul x_6 sub mul 6.67 mul sub sub mul -6.59 x_5 mul 0.9550000000000001 x_4 sub mul -7.0 x_8 mul -0.648 mul x_1 x_7 x_0 mul 1.8800000000000001 mul div x_3 x_4 x_2 x_4