> ## Documentation Index
> Fetch the complete documentation index at: https://docs.denari.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Calculations

> Create calculator annotations on PDF documents.

Denari supports creating calculation annotations on PDF files. You can use this to show your work for calculations.

<Note>
  Calculations can be added to documents without requiring a reconciliation. This means you can create calculations on non-trial balance projects (sales tax, 1099, workers comp, and payroll).
</Note>

## Creating a calculation

<Steps>
  <Step title="Open and edit">
    Open a PDF document from the document list page and click the **Edit** button.
  </Step>

  <Step title="Open calculator">
    Click the calculator icon in the top right of the annotations bar.
  </Step>

  <Step title="Enter calculations">
    Enter calculations in the area to the right.
  </Step>

  <Step title="Add annotation">
    Click **Add as Annotation** and position the calculation annotation on the page.
  </Step>
</Steps>

You can create as many calculations as you'd like. To edit a saved annotation, click the purple edit icon on the annotation in the right panel.

When done, click the **Save** button in the top right.

## Keyboard shortcuts

| Key Combination    | Action            |
| ------------------ | ----------------- |
| **Shift + C**      | Clear input       |
| **Del**            | Clear calculation |
| **Enter** or **=** | Calculate total   |

<Tip>
  Hover the **i** icon in the top left of the annotation drawer for a quick reference of keyboard shortcuts.
</Tip>

## Precision

Calculator annotations support up to 6 decimal places (minimum 2 shown) for improved accuracy while maintaining readability.