A bag of rice is 25 kilograms, and (2/5) of it has been eaten, how many kilograms have been eaten?
一袋大米25千克，已经吃了它的(2/5)，吃了多少千克？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">25 * (2/5)</gadget>
<output>10</output>

<result>10</result>