def checkdigit:
       [[0, 3, 1, 7, 5, 9, 8, 6, 4, 2],
        [7, 0, 9, 2, 1, 5, 4, 8, 6, 3],
        [4, 2, 0, 6, 8, 7, 1, 3, 5, 9],
        [1, 7, 5, 0, 9, 8, 3, 4, 2, 6],
        [6, 1, 2, 3, 0, 4, 5, 9, 7, 8],
        [3, 6, 7, 4, 2, 0, 9, 5, 8, 1],
        [5, 8, 6, 9, 7, 2, 0, 1, 3, 4],
        [8, 9, 4, 5, 3, 6, 2, 0, 1, 7],
        [9, 4, 3, 8, 6, 1, 7, 2, 0, 5],
        [2, 5, 8, 1, 4, 3, 6, 7, 9, 0]]
      as $m
    | tostring | explode
      # "0" is 48
    | 0 == reduce (.[] - 48) as $d (0; $m[.][$d] );
	
# The task:
5724, 5727, 112946, 112949
| checkdigit as $d
| [., $d]