Xiaoli's family has saved a five-year deposit with an annual interest rate of 3.87% (no interest tax). After one year, a total of 23,870 yuan has been withdrawn. How much did Xiaoli's family save at the beginning? (Solution of column equation)
小丽家存了一个五年期存款，存款时的年利率为3.87%(不缴利息税)，一年后共取23870元，小丽家开始存了多少元？(列方程解)
<gadget id="calculator">3.87 / 100</gadget>
<output>0.0387</output>

<gadget id="calculator">0.0387 * 5</gadget>
<output>0.1935</output>

<gadget id="calculator">1 + 0.1935</gadget>
<output>1.1935</output>

<gadget id="calculator">23_870 / 1.1935</gadget>
<output>20_000</output>

<result>20_000</result>