Some fruits are shipped from the store. The number of baskets of pears is 3/4 of the number of baskets of apples, and the number of baskets of apples is 4/5 of the number of baskets of oranges. Fifteen baskets of pears are shipped, how many baskets of oranges are shipped?
商店运来一些水果，梨的筐数是苹果筐数的(3/4)，苹果的筐数是橘子筐数的(4/5)．运来梨15筐，运来橘子多少筐？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">15 / (3/4) / (4/5)</gadget>
<output>25</output>

<result>25</result>