Y add 30.6 div sub mul -66.9 mul x_1 div sub mul 40.800000000000004 x_6 mul 0.18 x_4 x_4 mul 0.28400000000000003 div x_5 add sub mul 7.45 exp add 0.398 mul -0.03 x_4 mul -7.87 tan add 99.60000000000001 mul -2.43 x_2 mul -0.161 x_3 x_0