Xiao Gang went to the Children's Palace from school. He walked for 10 minutes, at a rate of 120 meters per minute; when he came back, he walked 80 meters per minute. What is the average speed of Xiao Gang back and forth?
小刚从学校去少年宫，去时走了10分钟，每分钟走了120米；回来时每分钟走80米，小刚来回的平均速度是多少？
<gadget id="calculator">10 / 80</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">120 * (1/8)</gadget>
<output>15</output>

<gadget id="calculator">10 + 15</gadget>
<output>25</output>

<gadget id="calculator">2 / 25</gadget>
<output>2/25 = around 0.08</output>

<gadget id="calculator">120 * 10 * (2/25)</gadget>
<output>96</output>

<result>96</result>