The store sold 52 ballpoint pens last week, 27 more than the number of fountain pens sold. How many pens did the store sell?
商店里上星期卖出圆珠笔52支，比卖出的钢笔多27支，商店卖了钢笔多少支？
<gadget id="calculator">52 - 27</gadget>
<output>25</output>

<result>25</result>