There are 708 story books in Zhuanglang No. 1 library, 139 more than technology books. How many books are there in total?
庄浪一小图书馆室有故事书708本，比科技书多139本，两种书一共有多少本？
<gadget id="calculator">708 - 139</gadget>
<output>569</output>

<gadget id="calculator">569 + 708</gadget>
<output>1_277</output>

<result>1_277</result>