Memorial Stadium has traditionally relied exclusively upon 80 baseball games to generate revenue. However, the local baseball team has decided to move to a larger city. It is estimated that profit margin can be maintained or even increased by offering a smaller number of larger events. If the profit margin for a baseball game is $45,000 and the profit margin for an average concert is $175,000, how many concerts would it take to recoup the loss of the baseball games? (Round to the nearest whole number.)