The store shipped 10 baskets of apples, and took out 15 kilograms of apples from each basket. The remaining apples were exactly the weight of the original 4 baskets of apples. How many kilograms of apples were in each basket?
商店运来10筐苹果，从每筐苹果中取出15千克，余下的苹果恰好是原来4筐苹果的重量，原来每筐苹果多少千克？
<gadget id="calculator">10 - 4</gadget>
<output>6</output>

<gadget id="calculator">10 / 6</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">15 * (5/3)</gadget>
<output>25</output>

<result>25</result>