Apples are 6 yuan per kilogram, pears are 3 yuan per kilogram, and my mother bought 4 kilograms of apples. If you buy pears with the money you buy apples, how many kilograms of pears can you buy?
苹果每千克6元，梨每千克3元，妈妈买了4千克苹果．如果用买苹果的钱买梨，可以买多少千克梨？
<gadget id="calculator">4 / 3</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">6 * (4/3)</gadget>
<output>8</output>

<result>8</result>