The fruit shop bought back 72 kg of apples and 123 kg of pears. The oranges bought back are three times the total number of apples and pears. How many kilograms of oranges are bought back?
水果店买回苹果72千克，买回梨123千克．买回的桔子是苹果和梨的总数的3倍，水果买回桔子多少千克？
<gadget id="calculator">72 + 123</gadget>
<output>195</output>

<gadget id="calculator">195 * 3</gadget>
<output>585</output>

<result>585</result>