Xiao Ming walks to the Children's Palace. He walks an average of 75 meters per minute. After walking for 8 minutes, his father catches up with him by bicycle at a speed of 195 meters per minute. How many minutes will he catch up with Xiao Ming?
小明步行去少年宫，他平均每分钟走75米，走了8分钟后，爸爸骑车以每分钟195米的速度追赶，几分钟后能追上小明？
<gadget id="calculator">195 - 75</gadget>
<output>120</output>

<gadget id="calculator">8 / 120</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">75 * (1/15)</gadget>
<output>5</output>

<result>5</result>