There are some beverages in a cup of coffee. If the beverage is tripled, the weight of the coffee cup and the beverage is 98 grams; if the beverage is increased to 5 times, the total weight of the coffee cup and the beverage is 200 grams. How many grams of beverage was originally in the coffee cup?
一个咖啡怀中有一些饮料，如果把饮料加到原来的3倍，咖啡杯和饮料共重98克；如果把饮料加到原来的5倍，这时咖啡杯和饮料共重200克．咖啡杯中原来有饮料多少克？
<gadget id="calculator">200 - 98</gadget>
<output>102</output>

<gadget id="calculator">5 - 3</gadget>
<output>2</output>

<gadget id="calculator">102 / 2</gadget>
<output>51</output>

<result>51</result>