2.5 times of a number is 6.25, what is its 0.5 times.
一个数的2.5倍是6.25，它的0.5倍是多少．
<gadget id="calculator">6.25 / 2.5</gadget>
<output>2.5</output>

<gadget id="calculator">2.5 * 0.5</gadget>
<output>1.25</output>

<result>1.25</result>