the previaling party shall receive recovery his attoneys' fees and
(cost based upon actual attoneys' time spent at the attoneys' then prevailing hourly rate)
the meaning, please

Question

the previaling party shall receive recovery his attoneys' fees and
(cost based upon actual attoneys' time  spent at the attoneys' then prevailing hourly rate)
the meaning, please

Answer

The cost is based on the number of hours the attorneys work.  The amount they charge per hour is the prevailing rate at the time when they are doing the work.