The balance of settlement reserve is initial deposit+historical liquidation profit and loss+current liquidation profit and loss+open position profit and loss-position occupation deposit, in which the initial deposit is 200,000, there is no historical liquidation, and the open position profit and loss is (1900-1860) * 20 *10 = 0.8 million. The profit and loss of liquidation on that day is 30 lots *( 1890- 1860) yuan per ton * 10 ton per lot =0.9 million yuan, and the position occupation margin is calculated according to the settlement price of that day, and 5%*20 lots * 10 ton per lot */kloc-

So the balance of settlement reserve is 200,000 +0.9 million +0.8 million-1.9 million = 1.98 million.