The ratio of a ratio is 3, the latter term of the ratio is (3/4), what is the former term of this ratio.
一个比的比值是3，比的后项是(3/4)，这个比的前项是多少．
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">3 * (3/4)</gadget>
<output>9/4 = around 2.25</output>

<result>9/4 = around 2.25</result>