There are 360 kg of pears in the fruit shop. After selling (1/4) of them, the mass of the remaining pears is 60% of the mass of the apples. How many kg does the apple weigh?
水果店有梨子360kg，卖出它的(1/4)后，剩余的梨的质量是苹果质量的60%，苹果有多少kg？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">360 * (3/4)</gadget>
<output>270</output>

<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">270 / (3/5)</gadget>
<output>450</output>

<result>450</result>