Mom bought 10 catties of apples, 8 catties of pears, and the same weight of oranges as apples. How many catties of fruit did she buy in total?
妈妈买了10斤苹果，8斤梨，买的橘子和苹果一样重，共买来水果多少斤？
<gadget id="calculator">10 * 2</gadget>
<output>20</output>

<gadget id="calculator">20 + 8</gadget>
<output>28</output>

<result>28</result>