Y add -0.981 div div x_5 x_1 sub mul 5.53 x_0 sub mul -4.8 x_4 sub mul -8.200000000000001 div x_3 x_7 mul -0.613 div div add mul -82.10000000000001 x_8 mul -7.7 div x_7 x_6 sub mul 6.92 x_6 mul 0.315 div x_3 x_2 exp add 0.527 mul 0.221 x_0