Afraid to say 'always'

I'm puzzled by '24/7' for 'all the time'

If it is necessary to supplement '24 hours per day' by adding '7 days per week', we need to supplement that in turn by '52 weeks per year'.

If we don't need the 52, we could drop the 7 as well and say '24' for '24 hour per day'

Even easier would be '1' for the proportion of the time the speaker claims to be available, though anyone who likes to show off with numbers could say '3.1*10⁷', the interpretation of which I leave as an exercise for the reader.