How many times of 3.6 is 4 times of 7.2.
3.6的多少倍是7.2的4倍．
<gadget id="calculator">4 / 3.6</gadget>
<output>1.111111</output>

<gadget id="calculator">7.2 * 1.111111</gadget>
<output>7.999999</output>

<result>7.999999</result>