Y add 2.21 add mul -0.502 div sub mul 0.28 tan add 0.005 mul -0.031 mul add mul -0.683 pow3 add -3.62 mul -31.5 x_4 mul -23.700000000000003 x_3 x_1 mul 1.75 pow3 add 68.8 mul -2.56 x_0 x_4 mul -22.3 x_2