Mom bought 500 grams of grapes and ate them at noon (3/10), how many grams did they eat at noon?
妈妈买了500克葡萄，中午吃了(3/10)，中午吃了多少克？
<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">500 * (3/10)</gadget>
<output>150</output>

<result>150</result>