How did they find Premium? The website that was used didn't provide this information. What formula has to be used in excel with the given information to find the premium that they have??

NORDSTROM INC NYSE: IWN Current Stock Price: 20.73 (11/29/22) Chosen Options: \begin{tabular}{ll} \multicolumn{1}{c}{ Call } & \multicolumn{1}{c}{ P } \\ Moneyness: Out of the Money & Moneyness: Near the Money \\ Premium: 1.30 & Premium: 2.17 \\ Strike Price: 22.50 & Strike Price: 17.50 \\ Expiration: 4/21/2023 & Expiration: 4/21/2023 \end{tabular}