How much more is 5 times 2.8 than 3 2.5?
2.8的5倍比3个2.5多多少？
<gadget id="calculator">2.8 * 5</gadget>
<output>14</output>

<gadget id="calculator">2.5 * 3</gadget>
<output>7.5</output>

<gadget id="calculator">14 - 7.5</gadget>
<output>6.5</output>

<result>6.5</result>