It is known that 2.5*4=10, then 10/4=how much.
已知2.5*4=10，那么10/4=多少．
<gadget id="calculator">4 / 4</gadget>
<output>1</output>

<gadget id="calculator">2.5 * 1</gadget>
<output>2.5</output>

<result>2.5</result>