In this chapter, we covered table calculations, which enable us to use the results of our prior calculations as input for new ones. We learned how to create simple calculations with the click of a button, how to change their scope and customize them, and how to use them to create new and more complex calculations. After learning about simple aggregations in the previous chapter, this chapter serves as a good introduction to Tableau's most daunting element when coming from Excel or other BI tools: level of detail calculations. These will be covered in the next chapter, where we will learn how to make use of information that is not visible in the current views.