The ratio of a ratio is (2/3), the latter term is 15, what is the former term of the ratio
一个比的比值是(2/3)，后项是15，比的前项是多少
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(2/3) * 15</gadget>
<output>10</output>

<result>10</result>