11-6/7/7 is the answer 0 or 3.14
If we follow the rule for order of operation, division is done in the order from left to right , so
6/7/7 = (6/7)÷7 = 6/49
so
11 - 6/49 is 10.87755
even Google agrees with me
http://www.google.ca/search?hl=en&source=hp&q=11-6%2F7%2F7&aq=f&aqi=&aql=&oq=&gs_rfai=