In May 1997, George Soros started shortingThai Baht for U.S. dollar with a forward contract. As a result, the Thai Baht exchange rate had moved from 42.1 Bahts per dollar (May 1, 1997) to 31.4 Bahts per dollar (May 31, 1997) in a month. If George Soros had a short position of 24,000,000 Bahts forward contract at forward rate F1(Baht/$)=51.3 on May 1, 1997, then his profit/loss in the forward trading would be $ on May 31, 1997. (Please keep the negative sign if any and two decimal numbers.)