After increasing 0.5, the number obtained is 5 times of it.
0.5增加多少后，所得的数是它的5倍．
<gadget id="calculator">0.5 * 5</gadget>
<output>2.5</output>

<gadget id="calculator">2.5 - 0.5</gadget>
<output>2</output>

<result>2</result>