The Admin at Universal Containers set up a Price Rule to override List Price with a discounted promotional price. The Price Action has a formula which is as follows: SBQQ_ListPrice_c * (1 - Promotional_Discount_c). The Admin is finding that every Calculate is clicked, the price is adjusted. For example, if List Price is $10.00 and promotional discount is 10%: 10.00 * (1 - 020) = 9.00. The next time calculate is clicked, the following calculation takes place: 9 * (1-0.10) = 8.10. If List Price must be overridden, how can this problem be fixed?