Xiao Fang rides a bicycle to the bookstore to buy books. When he goes there, he travels 225 meters per minute. It takes 20 minutes. When he comes back, it takes 25 minutes. What is the speed of Xiao Fang's bicycle when he comes back?
小方骑自行车去书店买书，去的时候每分钟行225米，用了20分钟，回来的时候用了25分钟，小方回来的时候骑车速度是多少？
<gadget id="calculator">20 / 25</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">225 * (4/5)</gadget>
<output>180</output>

<result>180</result>