Xiaohua spent 18.7 yuan to buy stationery in the supermarket, 14.3 yuan more than buying biscuits. How much did Xiaohua spend in the supermarket?
小华到超市买文具用去18.7元，比买饼干多用了14.3元．小华在超市共花了多少钱？
<gadget id="calculator">18.7 - 14.3</gadget>
<output>4.4</output>

<gadget id="calculator">4.4 + 18.7</gadget>
<output>23.1</output>

<result>23.1</result>