How to erase price currency from price element for mathematical operations purpose

Very often the "price" element in the feed contains a numerical value and a currency, e.g.: 123 PLN. To use the "price" for mathematical operations, it needs to be pre-cleaned from the currency.

To create an element that will contain the price without the currency, a simple operation needs to be performed. Create a new variable using add Variable - e.g.: "price_no_currency" and perform the operation on it as shown below (image below).

Note: Remember that there is a space between the currency and the numerical value, and it should be taken into account in the operation below.