Calculate the total price of an order automatically by clicking “Add Form Element” in the Form Builder and selecting the Form Calculation widget from the “Widgets” tab. Use the keypad in the calculation wizard to create your formula. You can select which form fields you’d like to include in your formula, such as price or quantity, with the “Add Field” option above the keypad. Save your changes when you’ve finished writing the formula. Your order form is ready to do the math for you!