Calculators are used by all kinds of people everyday to do different types of work. Examples include office workers who add up sales and figure out workers’ pay, and store managers who add up sales at shops and convenience stores each day. Other examples include accountants who carefully list the money people and companies spend and receive, tax accountants who help people figure out the correct amount of tax to pay to the government, and financial planners who help people save and earn money for the future. These kinds of people use calculators with special features for difficult calculations.