How can make the paypal payment total reflect the number of nights multiplied by the room price

hey Im running a hotel i need customers to make online reservations with payment. how do i go about making the total that reflects on form paypal to be the number of nights multiplied by the room price.

It is possible to add a product with a quantity option to calculate the total amount. Please take a look at the following animation.

Alternatively, if you calculate total using standard form fields, you can forward calculated amount to the payment field.

How to Pass a Calculation to a Payment Field

If you need any further assistance, please let us know.