# Gigasecond Calculate the moment when someone has lived for 10^9 seconds. A gigasecond is 10^9 (1,000,000,000) seconds. * * * * For installation and learning resources, refer to the [exercism help page][]. [exercism help page]: http://exercism.io/languages/lfe To run the provided tests, you will need `make`. Open a terminal window and run the following from the exercise directory: ```sh make test ``` You should now be able to see the results of the test suite for the exercise. ## Source Chapter 9 in Chris Pine's online Learn to Program tutorial. [http://pine.fm/LearnToProgram/?Chapter=09](http://pine.fm/LearnToProgram/?Chapter=09) ## Submitting Incomplete Solutions It's possible to submit an incomplete solution so you can see how others have completed the exercise.