////////////////////////////////////////////////////////////////
//
//     http://www.planetquantum.com/Solve/Level1/Den13/Page38.txt
//
////////////////////////////////////////////////////////////////

Generator:
(C (^ _E 1/2) _Pi 7 8 2)

Problem:
(= (cdot #[[16 48 72 12 70 70 1 28]
           [14 68 48 65 7 87 81 41]
           [63 57 16 53 77 61 0 71]
           [1 48 1 15 75 7 93 11]
           [64 6 61 2 11 94 21 56]
           [8 63 27 76 52 0 56 36]
           [66 43 0 28 66 63 77 56]]
         #[[x_1] [x_2] [x_3] [x_4] [x_5] [x_6] [x_7] [x_8]])
   #[[31] [41] [59] [26] [53] [58] [97]])

Solution:
(= #[[x_1] [x_2] [x_3] [x_4] [x_5] [x_6] [x_7] [x_8]]
   #[[224926920552]
     [486207363737]
     [66473855997]
     [-295155782314]
     [-208734409613]
     [-198404952945]
     [-24655924213]
     [12263531110]])