For example, if you originally had 6,543,800 yuan of funds and bought 20 futures contracts (assuming that the price of each hand is 80,000 yuan and the margin ratio is 5%, then each hand will occupy 4,000 yuan), then the total amount of funds occupied by * * * is 80,000 yuan, and the available funds are 20,000 yuan (excluding the handling fee). If the price rises, from 80,000 yuan to 80,250 yuan, then every hand earns 250 yuan, 20 hands are 5,000 yuan, but the margin becomes 40 12.50 yuan per hand, and 20 hands account for 80,250 yuan. ......