k1 = 231/500;
k2 = 19/100000000000;
k3 = 27/20000;
k4 = 193/100000;
k5 = 9/2500;
k6 = 1/10000;
k7 = 1/1000;
k8 = 3;
k9 = 4;
k10 = 11/1000;
k11 = 73/4000;
k12 = 1;