i feel like el tardo asking this after playing for a while, and especially when the thread has been silent for almost three months, but i'm not sure where to search for this particular bit of information

when people are describing players, and using a fraction such as 48/30 or something similar, to what precisely are they referring? i'm sure its something about their raising or calling over so many hands or something similar, but i just figure its best to ask and not be guessing