Two ships, A and B, sail from Yantai to Guangzhou at the same time. After 18 hours, ship A leads ship B by 57.6km. Ship A travels 35.7 km per hour, how many kilometers per hour does ship B travel?
甲乙两艘轮船同时从烟台开往广州．经过18小时后，甲船领先乙船57.6km．甲船每小时行35.7km，乙船每小时行多少千米？
<gadget id="calculator">57.6 / 18</gadget>
<output>3.2</output>

<gadget id="calculator">35.7 - 3.2</gadget>
<output>32.5</output>

<result>32.5</result>