Datarails allows you to perform some calculations between the fields on your Dashbaord.
Add a widget as usual.
Click the teal colored button "+Add Calculated Field".
A panel will popup.
Type in the name of your calculated field as you would like it to appear in the BI.
Scroll down under "Fields" and double click on the field upon which you would like to add your calculation.
**In the formula bar you can use the following operators: (+, -, *, /, ())
1. Type in the name of the new field you wish to add.
2. Select the field you wish to perform the calculation on. You can either double click or click (3. "inser