How many times of 15 is 100 times of 7.5.
15的多少倍是7.5的100倍．
<gadget id="calculator">100 / 15</gadget>
<output>20/3 = around 6.666667</output>

<gadget id="calculator">7.5 * (20/3)</gadget>
<output>50</output>

<result>50</result>