The product of two numbers is (9/5), one of which is (3/5), and what is the other number.
两个数的积是(9/5)，其中一个数是(3/5)，另一个数是多少．
<gadget id="calculator">9 / 5</gadget>
<output>9/5 = around 1.8</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(9/5) / (3/5)</gadget>
<output>3</output>

<result>3</result>