Xiao Gang and his father made an appointment to go to the park, his father rode a bike, and he ran. After Xiaogang ran for 10 minutes, his father chased him by bicycle. I caught up with Xiaogang 800 meters away from home. At this time, my father remembered that he didn't bring a camera, so he immediately went home to get it, and went back in time to catch up with Xiaogang. When he caught up with Xiaogang again, he was already 1,200 meters away from home. How many meters does Xiaogang walk per minute?
小刚和爸爸约好去公园，爸爸骑车，他跑步．小刚跑10分钟后，爸爸骑车去追．在距家800米处追上了小刚，这时爸爸想起没带照相机，于是立即返回家拿，并及时返回去追小刚．再追上小刚时，已距家1200米．小刚每分钟行多少米？
<gadget id="calculator">800 + 1_200</gadget>
<output>2_000</output>

<gadget id="calculator">1_200 - 800</gadget>
<output>400</output>

<gadget id="calculator">2_000 / 400</gadget>
<output>5</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(4/5) / 10</gadget>
<output>2/25 = around 0.08</output>

<gadget id="calculator">800 * (2/25)</gadget>
<output>64</output>

<result>64</result>