A store sells 14 bicycles in the morning on the first day, 17 in the afternoon, and 40 in the second day. How many more cars were sold on the second day than on the first day?
某商店第一天上午卖出14辆自行车，下午卖出17辆，第二天卖出40辆．第二天比第一天多卖出多少辆？
<gadget id="calculator">14 + 17</gadget>
<output>31</output>

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

<result>9</result>