Fucking shit o.O your right, division symbol / <- works as a parenthisis
/ = fraction or ratio, generally follows all rules of division so we use it as that
- with the two dots = division we know from PEMDAS >.<
this equation should very well be clarified, we dont know if its
48
------
2(9+3)
or
48
--- (9+3)
2
These are two completely different equations, but both could be applied to OP question