In a basket of apples, if one is taken away, it can be distributed equally to 2 children, and if one is put in, it can be distributed to 3 children equally. How many apples are there at least in this basket?
一篮苹果，如果拿走一个，刚好能平均分给2个小朋友，如果放进一个，刚好能平均分给3个小朋友，这篮苹果最少有几个？
<gadget id="calculator">1 + 1</gadget>
<output>2</output>

<gadget id="calculator">3 - 2</gadget>
<output>1</output>

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

<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">4 + 1</gadget>
<output>5</output>

<result>5</result>