Dad has saved education savings for Xiaoming for five years, with an annual interest rate of 5.4%. After the maturity, I received the principal interest of 2646 yuan.
23240÷( 1+5.40%×3)
=23240÷( 1+0.054×3)
=23240÷ 1. 162
= 20,000 yuan;
A: The principal of my father's education savings fund for Xiaohua is 20,000 yuan.