Wang Qiang saved a sum of money for two years, with an annual interest rate of 2.15%, and he received an interest of 163.4 yuan when it matured. How much money did Wang Qiang save?
王强存了一笔钱，存两年，年利率是2.15%，到期时他获得利息163.4元，王强存了多少钱？
<gadget id="calculator">2.15 / 100</gadget>
<output>0.0215</output>

<gadget id="calculator">163.4 / 0.0215 / 2</gadget>
<output>3_800</output>

<result>3_800</result>