I want to extract the coefficient of P in fractional form equal to or more than 5 decimal points

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Joy Mondal
Joy Mondal 2019-7-10
评论： Walter Roberson 2019-7-13
c
clear all
clc
syms s
a=-0.01;
wn=3.06309;
k1=0.5;
k2=-1;
td=0.1;
wf=3.43;
zf=0.175;
P = (s^2+a*s+wn^2)*(s^2+2*zf*wf*s+wf^2);
coeffs(P)
now from the program i want to extract the coefficient of P in fractional form equal to or more than 5 decimal points the output is like
[ 17491108526356076144474795390179/158456325028528675187087900672, 12549355434302586327/1125899906842624000, 37181815892978056717/1759218604441600000, 2381/2000, 1 ]. Now how to get the coefficients in fractional form??

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