According to the same working efficiency, a loom works for 3 hours in the morning and 4.5 hours in the afternoon to weave a total of 247.5 meters of cloth. How many meters of cloth are weaved per hour on average?
一台织布机按照同样的工作效率，上午工作了3小时，下午工作了4.5小时共织布247.5米，平均每小时织布多少米？
<gadget id="calculator">3 + 4.5</gadget>
<output>7.5</output>

<gadget id="calculator">247.5 / 7.5</gadget>
<output>33</output>

<result>33</result>