(1/5) of a number is 200, what is (3/8) of this number.
一个数的(1/5)是200，这个数的(3/8)是多少．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">200 / (1/5)</gadget>
<output>1_000</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1_000 * (3/8)</gadget>
<output>375</output>

<result>375</result>