A military unit of a certain army is rebuilding their homes for the people of Ya’an. They plan to build 980 simple houses. In the first month, 384 houses were built, and in the second month, 416 houses were built. How many houses are left? (answer in two ways)
某子弟兵部队为雅安人民重建家园，准备建简易房980间，第一月建成384间，第二月建成416间，还剩多少间没建成？(用两种方法解答)
<gadget id="calculator">980 - 384 - 416</gadget>
<output>180</output>

<result>180</result>