$6 6 6 6 = 58$
$+ - * /$ and $()$ only
58 must remain as 58, (not 5 + 8, etc.)
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You can run my code here which takes as input the number of test cases on one line, and then for each test case there are four lines, each the value of one of $a,b,c,d$ which can have any of the operations occur on them as long as the result is an integer. It prints out all of the resulting possibilities. It was marked correct when submitted to this online judge. This is not a full answer, but I believe this means that there is no valid way to do this without lateral-thinking, for which there is no tag.
Probably invalid, but a creative lateral-thinking attempt:
Note that the number is: $(0000000000000000000000000000000000000000000000000000000000)_1$
Using leading zeroes...