What formula do I need to use to calculate miles? Really just looking for the answer to question 2, just can not figure out the equation to use with the combo boxes. Thanks

The table below shows the mileage from Major League Baseball's five American League West locations to the five National League West locations. 1. Create two combo boxes that will select an AL West city and an NL West city, placing the output from the combo boxes in cells C19 and C20, respectively. Position the combo boxes such that their output is hidden from the user, resulting in a clean template. 2. In cell C21, use an appropriate Excel function to return the mileage between any AL West and NL West locations selected in the combo boxes. (You should be able to tweak the formula you used in Individual Assignment 4.) 3. In cell C23, create a formula that returns the name of the selected route (i.e. "Anaheim to Arizona")