There are 776 books in the book corner of the second class of the third grade, 350 books have been lent out, and 130 books have been returned. How many books are there in the book corner now?
三年级二班图书角有图书776本，借出了350本，还回了130本，现在图书角还有多少本图书？
<gadget id="calculator">776 - 350</gadget>
<output>426</output>

<gadget id="calculator">426 + 130</gadget>
<output>556</output>

<result>556</result>