////////////////////////////////////////////////////////////////
//
//     http://www.planetquantum.com/Solve/Level1/Den13/Page31.txt
//
////////////////////////////////////////////////////////////////

Generator:
(C (^ 7 1/3) _Pi 7 8 3)

Problem:
(= (cdot #[[191 293 118 277 238 910 119 911]
           [683 954 876 28 286 243 905 34]
           [587 576 621 64 764 44 723 427]
           [617 923 75 600 752 544 147 728]
           [570 990 454 191 395 879 75 922]
           [794 461 529 386 421 201 314 748]
           [669 571 244 561 403 988 816 968]]
         #[[x_1] [x_2] [x_3] [x_4] [x_5] [x_6] [x_7] [x_8]])
   #[[314] [159] [265] [358] [979] [323] [846]])

Solution:
(= #[[x_1] [x_2] [x_3] [x_4] [x_5] [x_6] [x_7] [x_8]]
   #[[-22261992162048127253]
     [16376019682192805928]
     [-1610080056248499148]
     [7215177589438326003]
     [-14182563725277552656]
     [-20408300737096243515]
     [10076898091756312965]
     [20190016415901476019]])