In a basket of apples, if you take 2 apples, 3 apples, and 4 apples, there will be one left. How many apples are there in this basket?
一筐苹果，2个一拿，3个一拿，4个一拿，都会剩下一个，这筐苹果至少有多少个．
<gadget id="calculator">12 + 1</gadget>
<output>13</output>

<result>13</result>