There are 280 boxes of beverage A and beverage B in the cold drink point, and their quantity ratio is 3:4, so how many boxes of beverage B are there?
冷饮点中A饮料和B饮料共280箱，它们的数量比是3：4，那么B饮料有多少箱．
<gadget id="calculator">3 + 4</gadget>
<output>7</output>

<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">280 * (4/7)</gadget>
<output>160</output>

<result>160</result>