The fruit shop shipped 20 baskets of apples, the number of baskets of pears was 1/4 of apples, and the number of baskets of oranges was 5/9. How many baskets of oranges are shipped?
水果店运来苹果20筐，运来梨的筐数是苹果的(1/4)，又是桔子筐数的(5/9)．运来桔子多少筐？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">(1/4) / (5/9)</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">20 * (9/20)</gadget>
<output>9</output>

<result>9</result>