The supermarket is 78 meters south of Xiaoxue's house, and the school is 689 meters north of it. Xiaoxue starts from home in the morning, buys pencils in the supermarket first, and then goes to school. How many meters did she walk in total?
小雪家南面78米是超市，北面689米是学校，早晨小雪从家出发，先到超市买铅笔，然后去学校上学．她一共走了多少米？
<gadget id="calculator">78 + 689</gadget>
<output>767</output>

<gadget id="calculator">78 + 767</gadget>
<output>845</output>

<result>845</result>