#calculator__reckoner__figurer__computer  an expert at calculation (or at operating calculating machines)
  supertype:  #expert  a person with special knowledge or ability who performs skillfully
  subtype:  #number_cruncher.calculator__numbercruncher  someone able to perform complex and lengthy calculations
  subtype:  #statistician__actuary  someone versed in the collection and interpretation of numerical data (especially someone who uses statistics to calculate insurance premiums)
     subtype:  #surveyor.statistician  someone who conducts a statistical survey

No statement uses or specializes #calculator; click here to add one.