In a fruit shop, the ratio of the weight of apples to oranges is 4:5, and the weight of pears is 2/3 that of apples, which is 210 kg less than oranges. How many kg of oranges does the fruit shop ship?
一个水果店，运来的苹果和桔子重量的比是4：5，梨的重量是苹果的(2/3)，又比桔子少210千克，水果店运来桔子多少千克？
<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(5/4) - (2/3)</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">210 / (7/12)</gadget>
<output>360</output>

<gadget id="calculator">360 * (5/4)</gadget>
<output>450</output>

<result>450</result>