A bag of rice is 40 kilograms. I ate (1/4) of it in the first week. How many kilograms did I eat?
一袋大米40千克，第一周吃掉了它的(1/4)，吃了多少千克．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">40 * (1/4)</gadget>
<output>10</output>

<result>10</result>