A 12-year-old child needs 50 mg of vitamin C per day. It is known that a certain fruit juice contains 10 mg of vitamin C per 25 grams. How many grams of this juice should be consumed to meet the daily vitamin C requirement.
一个12岁的儿童每天需要50毫克的维生素C，已知某果汁每25克含维生素C10毫克，需要喝这种果汁多少克才能满足一天所需的维生素C．
<gadget id="calculator">50 / 10</gadget>
<output>5</output>

<gadget id="calculator">5 * 25</gadget>
<output>125</output>

<result>125</result>