The total income of Xiaoqiang’s family in 2014 was 90,000 yuan. If 50% of this year’s income is deposited in the bank, the annual interest rate for three years is 4.25%. How much interest can you get back when it matures?
2014年小强家的总收入是9万元，如果把今年收入的50%存入银行，定期三年年利率是4.25%，到期时可以取回利息多少元？
<gadget id="calculator">9 * 10_000</gadget>
<output>90_000</output>

<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">4.25 / 100</gadget>
<output>0.0425</output>

<gadget id="calculator">90_000 * (1/2) * 0.0425 * 3</gadget>
<output>5_737.5</output>

<result>5_737.5</result>