1. Calculator NounComputer, Estimator, Figurer, Reckoner  
An expert at calculation (or at operating calculating machines).  شمار کنندہ / کیلکولیٹر  
 
2. Calculator NounCalculating Machine  
A small machine that is used for mathematical calculations.  حساب لگانے والی مشین  

See Also
Expert  a person with special knowledge or ability who performs skillfully.
Actuary, Statistician  someone versed in the collection and interpretation of numerical data (especially someone who uses statistics to calculate insurance premiums).
Subtracter  a person who subtracts numbers.
Useful Words
Calculating, Calculative, Conniving, Scheming, Shrewd  used of persons; "the most calculating and selfish men in the community".
Calculation, Computation, Computing  the procedure of calculating; determining something by mathematical or logical methods.
Expert  a person with special knowledge or ability who performs skillfully.
Auto, Automobile, Car, Machine, Motorcar  a motor vehicle with four wheels; usually propelled by an internal combustion engine; "Get your car fixed".
Mathematical  of or pertaining to or of the nature of mathematics; "a mathematical textbook".
In Operation, Operating, Operational  being in effect or operation; "de facto apartheid is still operational even in the `new' African nations".
Belittled, Diminished, Small  made to seem smaller or less (especially in worth); "her comments made me feel small".
That  referring to the farther one; "That`s the way".
Secondhand, Used  previously used or owned by another; "bought a secondhand (or used) car".