If it is an annual interest rate, it means that the annual interest rate is 50%, and the annual interest rate of 100 yuan is 50 yuan.
Expression of annual, monthly and daily interest rates:
(1) The annual interest rate is the annual interest. The annual interest rate is expressed as a percentage of the principal. Ten percent is an interest. 1% is one centimeter.
(2) The monthly interest rate is the interest calculated on a monthly basis. The monthly interest rate is expressed as a few thousandths of the principal. One ten thousandth is the dividend, that is, 1% is 1.
(3) The daily interest rate is the interest calculated on a daily basis. The daily interest rate is expressed as a few ten thousandths of the principal. Ten ten thousandths is the dividend, that is, 0. 1% is 1.
(4) Annual interest rate/12 = monthly interest rate, and daily interest rate * 365 = annual interest rate.