Xiaoxiao walked to school, walking 70 meters per minute. After 12 minutes, his father found that the little pencil case was still at home, so he took the pencil case and immediately rode a bicycle to chase Xiaoxiao at a speed of 280 meters per minute. A few minutes after Dad set off, he caught up with Xiao? How far is Xiaoxiao from home at this time?
小小步行上学，每分钟走70米，12分钟后，爸爸发现小小的文具盒还在家里，就带上文具盒立即骑自行车以每分钟280米的速度去追小小．爸爸出发几分钟后追上小小？这时小小离家多远？
<gadget id="calculator">280 - 70</gadget>
<output>210</output>

<gadget id="calculator">12 / 210</gadget>
<output>2/35 = around 0.057143</output>

<gadget id="calculator">70 * (2/35)</gadget>
<output>4</output>

<gadget id="calculator">12 + 4</gadget>
<output>16</output>

<gadget id="calculator">70 * 16</gadget>
<output>1_120</output>

<result>1_120</result>