6.5 is 2.5 less than 5 times of x, then x=how much.
6.5比x的5倍少2.5，则x=多少．
<gadget id="calculator">2.5 + 6.5</gadget>
<output>9</output>

<gadget id="calculator">9 / 5</gadget>
<output>9/5 = around 1.8</output>

<result>9/5 = around 1.8</result>