Array
(
    [0] => 11 + 18 - 20 * 13 / 10
    [1] => 3
    [2] => 28
    [3] => 6
    [4] => 24
    [5] => 10
    [6] => 14
    [7] => 23
    [8] => 37
    [9] => 46
    [10] => 15
    [11] => 20
    [12] => 45
    [13] => 2
    [14] => 35
    [15] => 31
    [16] => 22
    [17] => 17
    [18] => 18
    [19] => 27
    [20] => 19
    [21] => 33
    [22] => 43
    [23] => 5
    [24] => 26
    [25] => 34
    [26] => 0
    [27] => 7
    [28] => 13
    [29] => 30
    [30] => 48
    [31] => 12
    [32] => 36
    [33] => 41
    [34] => 1
    [35] => 49
    [36] => 39
    [37] => 8
    [38] => 44
    [39] => 21
    [40] => 25
    [41] => 42
    [42] => 4
    [43] => 9
    [44] => 40
    [45] => 11
    [46] => 47
    [47] => 29
    [48] => 50
    [49] => 32
    [50] => 16
    [51] => 38
)