stuck, 176 bytes

Result

WA

Duration

499ms

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

33 71 02
25 70 68
14 11 85
48 12 93

stdout

[[22486]]

stderr

strace