The steel plant produces 7.85 tons more steel bars in the morning than in the afternoon, and works 5.5 hours in the morning and 5 hours in the afternoon. How many tons of steel bars does the steel plant produce on average per hour?
钢铁厂上午比下午多生产钢筋7.85吨，上午工作5.5小时，下午工作5小时，钢铁厂平均每小时生产钢筋多少吨？
<gadget id="calculator">5.5 - 5</gadget>
<output>0.5</output>

<gadget id="calculator">7.85 / 0.5</gadget>
<output>15.7</output>

<result>15.7</result>