357 14 yuan. A change coupon is a monetary fund with a yield of about 7 days and an annualized interest rate of 1.8%. Suppose the deposit is X, and the daily interest is X * 1.8% * 30/365 = 50, which is 357 14 yuan. Coin Pass is the latest function of WeChat, which is similar to Yu 'ebao: users can directly use the money in the coin pass for consumption, such as transferring money, issuing red envelopes, scanning code payment, and returning credit cards.