Xiaoming and Xiaodong each have 20 pieces of candy. After Xiaoming gave Xiaodong 7 pieces of candy, how many pieces of candy did Xiaoming have more than Xiaodong?
小明和小东每人有20块糖，小明给了小东7块糖后，小明比小东多多少块糖．
<gadget id="calculator">7 * 2</gadget>
<output>14</output>

<result>14</result>