67:9 I go to storeroom

It seems like you're referencing a time, possibly in the format of "67:9," but this doesn't appear to be a standard way of noting time. If you’re trying to convey specific information or ask a question related to your university studies, please clarify what you mean, and I'll be happy to assist! Are you preparing for an exam about the storeroom in a specific subject, or do you have a particular question in mind?