The fruit shop has 300 kg of bananas and some apples; when 50% of the bananas are sold and 2/3 of the apples are sold, there are as many apples and bananas left. How many kilograms does an apple weigh?
水果店有300千克的香蕉和一些苹果；当香蕉卖出50%、苹果卖出(2/3)时，剩下的苹果和香蕉同样多．原来苹果有多少千克？
<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 - (1/2)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 - (2/3)</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/2) / (1/3)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">300 * (3/2)</gadget>
<output>450</output>

<result>450</result>