z equals 100

what is z/10?

http://www.google.com/search?source=ig&hl=en&rlz=1G1GGLQ_ENUS308&q=100%2F10&aq=f&aqi=g4g-m5&aql=&oq=&gs_rfai=CgiL0b0KqTLLkB4HY6AOtlNkyAAAAqgQFT9BHLRc