The fruit shop shipped back 9 baskets of bananas, and the number of apples shipped back was twice that of bananas and three times that of pears. How many baskets of pears and bananas were shipped back?
水果店运回9筐香蕉，运回的苹果是香蕉的2倍，是梨的3倍，运回梨和香蕉共多少筐？
<gadget id="calculator">9 * 2</gadget>
<output>18</output>

<gadget id="calculator">18 / 3</gadget>
<output>6</output>

<gadget id="calculator">9 + 6</gadget>
<output>15</output>

<result>15</result>