A's number is 2, B's number is 10, and B's number is greater than A's number.
甲数是2，乙数是10，乙数比甲数多多少．
<gadget id="calculator">10 - 2</gadget>
<output>8</output>

<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<result>4</result>