The supermarket shipped 150 boxes of apples and 210 boxes of oranges. The total number of these two fruits is (9/4) times that of pears. How many boxes of pears are shipped?
超市运来150箱苹果，210箱桔子，这两种水果的总数相当于梨的(9/4)倍，运来梨多少箱？
<gadget id="calculator">150 + 210</gadget>
<output>360</output>

<gadget id="calculator">9 / 4</gadget>
<output>9/4 = around 2.25</output>

<gadget id="calculator">360 / (9/4)</gadget>
<output>160</output>

<result>160</result>