Y add 66.3 div sub mul 1.82 mul pow2 add 15.200000000000001 mul -0.5 x_2 x_4 sub mul 6.3100000000000005 div mul sub mul -73.10000000000001 abs add -41.400000000000006 mul -0.636 x_3 mul -2.45 x_2 abs add -0.457 mul 9.63 x_4 x_0 mul 0.85 x_1 mul x_1 x_3