The number of hands that investors need to close their positions forcibly when they can't make up the margin is: (original position-current margin (equity) can be maintained).

The specific calculation is as follows:

(Settlement price 220 yuan/gram)

Right of the day = 100000-40000-240 = 59760

First deposit: 220×1000×10% = 22000.

The number of contracts for forced liquidation is: 4-59760÷22000= about 1.3 (hands).

Round up =2 hands.

Answer: You need to draw two hands.

Let strong parity 220 yuan/gram.

Then the investor's rights and interests are: 59760-60×2=59640 (yuan).