I can tell you clearly.

The Expo Card cash withdrawal fee is 1%, with a minimum of 10 yuan per transaction. In other words, if you withdraw 400, there will be a handling fee of 10 yuan. The same goes for taking 1000.

For cash withdrawals, interest will be charged at 0.5% starting from that day. The money you have to repay = 400 principal + 10 handling fee + 400 * 50,000 * number of days