The black and white teams each have some candies. Ou Zebra and Koizumi have 58 candies in total, Ou Ou and Xiaomei have 47 candies in total. Ou Zebra has 4 fewer than Koizumi, and Oobi has 9 more than Koizumi. So, how many candies does Xiaomei have?
黑白团队各有一些糖果，奥斑马和小泉共有58颗，欧欧和小美共有47颗．奥斑马比小泉少4颗，欧欧比小泉多9颗．那么，小美有多少颗糖果．
<gadget id="calculator">4 + 58</gadget>
<output>62</output>

<gadget id="calculator">1 + 1</gadget>
<output>2</output>

<gadget id="calculator">62 / 2</gadget>
<output>31</output>

<gadget id="calculator">31 + 9</gadget>
<output>40</output>

<gadget id="calculator">47 - 40</gadget>
<output>7</output>

<result>7</result>