Xiaoming's family bought a bag of rice weighing 15 kilograms. He ate (2/5), how many kilograms he ate.
小明家买来一袋大米，重15千克，吃了(2/5)，吃了多少千克．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">15 * (2/5)</gadget>
<output>6</output>

<result>6</result>