At the end of one day a clearing house member is long 100 contracts, and the settlement price is $$\$ 50,000$$ per contract. The original margin is $$\$ 2,000$$ per contract. On the following day the member becomes responsible for clearing an additional 20 long contracts, entered into at a price of $$\$ 51,000$$ per contract. The settlement price at the end of this day is $$\$ 50,200$$. How much does the member have to add to its margin account with the exchange clearing house?