例子:
Anne and her brother used a calculator to find out how much money they would need for gas on their roadtrip by calculating how far they would have to drive to get from Alaska to Ushuaia. 
The Noun Project
照片许可:
CC版权：出处标示，商业用途
Regionalism:
Neutral
Regional variant:
Neutral
Full Expression:
Scientific Instruments: calculator
This device is used to complete both simple and complex mathematical operations with numbers.