////////////////////////////////////////////////////////////////
//
//     http://www.planetquantum.com/Solve/Level1/Den13/Page57.txt
//
////////////////////////////////////////////////////////////////

Generator:
(C (Log 7) (Csc 1) 6 7 3)

Problem:
(= (cdot #[[194 591 14 905 531 330 510]
           [535 274 344 317 972 963 708]
           [472 958 186 118 845 939 14]
           [993 757 986 275 206 926 778]
           [765 849 858 787 152 699 306]
           [169 420 585 114 91 172 375]]
         #[[x_1] [x_2] [x_3] [x_4] [x_5] [x_6] [x_7]])
   #[[118] [839] [510] [577] [812] [121]])

Solution:
(= #[[x_1] [x_2] [x_3] [x_4] [x_5] [x_6] [x_7]]
   #[[-137077701403292526]
     [1154498815984123]
     [-9431543514933821]
     [15713361975851512]
     [-95253437229326947]
     [152989160322010217]
     [23363463834440835]])