6.5: How many = 1.3: 2.
6.5：多少=1.3：2．
<gadget id="calculator">2 / 1.3</gadget>
<output>1.538462</output>

<gadget id="calculator">6.5 * 1.538462</gadget>
<output>10.000003</output>

<result>10.000003</result>