Stationery store, post office and school are on the side of Innovation Road. The stationery store is 180 meters away from the school, and the post office is 390 meters away from the school. How many meters away is the stationery store from the post office?
文具店、邮局和学校在创新大路的一旁．文具店距学校180米，邮局距学校390米，文具店距邮局多少米？
<gadget id="calculator">390 + 180</gadget>
<output>570</output>

<result>570</result>