Y add 1.6600000000000001 sub sub mul -69.10000000000001 x_4 add sub mul 71.4 x_2 add mul 28.1 x_3 mul 58.2 x_1 mul -7.66 x_0 add mul -83.80000000000001 x_6 mul -0.217 div add mul -1.27 x_5 mul -4.18 x_7 x_7