calculation
cal·cu·la·tion
 /ˌkælkjəˈleıʃən/  noun  ,  pl   -tions
  1 : a process or result of calculating something
   [  count  ] According to experts' calculations, that star will explode within two billion years.
    The computer can do millions of calculations each second.
   [  noncount  ] Careful calculation is required to determine the required amount of fuel.
  2 : careful thought and planning that is done usually for selfish reasons
   [  count  ] The book reveals the cold calculations that were behind the government's policies.
   [  noncount  ] His positions are based on political calculation of what voters want to hear.