Suppose that on October $24$ you Sell $7$ March gold futures contracts for $$285$ per ounce. At $11$:$00$ am on October $25$ you buy $5$ March contracts for $$276\mathrm{.}5$ ounce. At the close of trading on October $25,$ gold futures settle for $$270\mathrm{.}5$ ounce. If the contract size is $100$ ounces and the initial margin equals $2850,$ how much do you gain or lose as of the close?