Xiao Ming walks to school, each branch is 75 meters. 12 minutes after Xiao Ming left home, Dad rode a bicycle to catch up with him, traveling 375 meters per minute. How many minutes did it take for Dad to catch up with Xiao Ming?
小明步行上学，每分行75米．小明离家12分钟后，爸爸骑自行车去追，每分钟行375米，爸爸出发多少分钟后能追上小明．
<gadget id="calculator">375 - 75</gadget>
<output>300</output>

<gadget id="calculator">12 / 300</gadget>
<output>1/25 = around 0.04</output>

<gadget id="calculator">75 * (1/25)</gadget>
<output>3</output>

<result>3</result>