A jacket is 300 yuan, the jacket is trousers (2/3), how much is a pair of trousers?
一件上衣300元，上衣是裤子的(2/3)，一条裤子多少钱？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">300 / (2/3)</gadget>
<output>450</output>

<result>450</result>