Need to extract the data between slashes

I have got the following contents and please can you advise me on how to extract the following data that appears between the very first slashes.
Thanks

i.e 576 , 10000, 1299

3/576/GPP///////NONE/0
50/10000/GPP///D4////GPP/0
234/1299/GPP///////NONE/0

cut -d\/ -f2

awk -F"/" '{ print $2}' <your_file> 

no need the "

awk  -F/ '{print $2}'