There are 390 kilograms of pears in the store, which is 40% less than apples, how many kilograms of apples are there in the store?
商店里有梨390千克，比苹果少40%，商店里有苹果多少千克？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">390 / (3/5)</gadget>
<output>650</output>

<result>650</result>