Y add -0.55 sub mul 0.17400000000000002 x_4 sub add mul -3.4000000000000004 x_4 add sub mul 0.311 tan add 0.675 mul 81.60000000000001 x_1 mul 0.6880000000000001 x_0 mul -6.46 x_4 mul 1.69 mul mul x_3 x_2 x_2