(3/4) multiplied by a number equals (3/20), what is the number?
(3/4)乘以一个数等于(3/20)，这个数是多少．
<gadget id="calculator">3 / 20</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(3/20) / (3/4)</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>