what is the ratio of passenger service personnel to the flight attendants
table of contents other areas in which we do business . depending on the scope of such regulation , certain of our facilities and operations , or the operations of our suppliers , may be subject to additional operating and other permit requirements , potentially resulting in increased operating costs . future regulatory developments future regulatory developments and actions could affect operations and increase operating costs for the airline industry , including our airline subsidiaries . see part i , item 1a . risk factors 2013 201cif we are unable to obtain and maintain adequate facilities and infrastructure throughout our system and , at some airports , adequate slots , we may be unable to operate our existing flight schedule and to expand or change our route network in the future , which may have a material adverse impact on our operations , 201d 201cour business is subject to extensive government regulation , which may result in increases in our costs , disruptions to our operations , limits on our operating flexibility , reductions in the demand for air travel , and competitive disadvantages 201d and 201cwe are subject to many forms of environmental regulation and may incur substantial costs as a result 201d for additional information . employees and labor relations the airline business is labor intensive . in 2015 , salaries , wages and benefits were our largest expenses and represented approximately 31% ( 31 % ) of our operating expenses . the table below presents our approximate number of active full-time equivalent employees as of december 31 , 2015 . mainline operations wholly-owned regional carriers total .

|  | Mainline  Operations | Wholly-owned  Regional Carriers | Total |
| :--- | :--- | :--- | :--- |
| Pilots and Flight Crew Training Instructors | 13,100 | 3,200 | 16,300 |
| Flight Attendants | 24,100 | 1,900 | 26,000 |
| Maintenance personnel | 14,400 | 1,800 | 16,200 |
| Fleet Service personnel | 16,100 | 3,200 | 19,300 |
| Passenger Service personnel | 16,500 | 7,100 | 23,600 |
| Administrative and other | 14,700 | 2,400 | 17,100 |
| Total | 98,900 | 19,600 | 118,500 |

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passenger_flight_ratio = 23600
flight_attendants = 26000
ratio = passenger_flight_ratio / flight_attendants
answer = ratio