The distance between the two places is 560 kilometers. Two cars, the fast and the slow, drive from opposite places at the same time. After 4 hours of meeting, the speed ratio of the two cars is known to be 4:3. How many kilometers does the slow car travel per hour?
两地相距560千米，快慢两辆汽车同时分别从两地相对开出，经过4小时相遇，已知两车的速度比为4：3，慢车每小时行多少千米？
<gadget id="calculator">4 / 3</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">4 * (4/3)</gadget>
<output>16/3 = around 5.333333</output>

<gadget id="calculator">4 + (16/3)</gadget>
<output>28/3 = around 9.333333</output>

<gadget id="calculator">560 / (28/3)</gadget>
<output>60</output>

<result>60</result>