The formula of base period multiple is: base period multiple =A/B×( 1+b)/( 1+a). A and B represent two current quantities respectively, and A and B represent the growth rates of A and B respectively. However, the result calculated by the base period multiple formula is only for the convenience of approximate calculation, not an accurate value.

Fund, in English, refers to a certain amount of funds set up for a certain purpose. It mainly includes trust and investment funds, provident funds, insurance funds, retirement funds and funds of various foundations.