After Naughty gave Xiaoxiao 4 cards, it was 1 card less than Xiaoxiao. Naughty turned out to have more cards than Xiaoxiao.
淘气给笑笑4张卡片后反而比笑笑少1张了，淘气原来比笑笑多多少张卡片．
<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<gadget id="calculator">8 - 1</gadget>
<output>7</output>

<result>7</result>