Y add 6.9 div div div mul div add mul 0.984 x_1 mul -0.578 pow3 add -0.555 mul 0.503 x_2 x_6 x_0 div sub mul -9.07 x_4 add mul 8.61 x_7 mul 0.20800000000000002 abs add -0.151 mul -6.97 x_5 pow3 add -6.33 mul 83.0 x_8 x_7 exp add 1.57 mul 9.86 x_3