stuck, 176 bytes

Result

AC

Duration

526ms

Code [DL]

ssss["x:map(int,x.split())"m["x:[x[i/3+1][i%3]-x[0][i%3] for i in range(9)]"m"x:(x[1]*x[5]*x[6]+x[2]*x[3]*x[7]+x[0]*x[4]*x[8]-x[2]*x[4]*x[6]-x[0]*x[5]*x[7]-x[1]*x[3]*x[8])/6"m]

stdin

27 32 03
79 92 17
44 78 64
04 05 44

stdout

11017

stderr

strace