The (4/5) of rice in the cafeteria is 200 kg, how many kg of rice will be used for (2/5) of the rice?
食堂里大米的(4/5)是200千克，用去这些大米的(2/5)，用去大米多少千克？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">200 / (4/5)</gadget>
<output>250</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">250 * (2/5)</gadget>
<output>100</output>

<result>100</result>