After a basket of apples is sold (1/5), another 6 kg is sold. At this time, the selling weight is exactly the remaining (1/2). How many kilograms did this basket of apples originally weigh?
一筐苹果卖掉(1/5)后，又卖掉6千克．这时卖出的重量正好是剩下的(1/2)．这筐苹果原来有多少千克？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/3) - (1/5)</gadget>
<output>2/15 = around 0.133333</output>

<gadget id="calculator">6 / (2/15)</gadget>
<output>45</output>

<result>45</result>