A converter in Hongxing Steelworks produced a total of 24.8 tons of steel in the first 3 days, and an average of 8.5 tons of steel per day in the next 4 days. How many tons of steel was produced on average this week?
红星炼钢厂一个转炉，前3天共炼钢24.8吨，后4天平均每天炼钢8.5吨，这个星期平均每天炼钢多少吨？
<gadget id="calculator">8.5 * 4</gadget>
<output>34</output>

<gadget id="calculator">34 + 24.8</gadget>
<output>58.8</output>

<gadget id="calculator">3 + 4</gadget>
<output>7</output>

<gadget id="calculator">58.8 / 7</gadget>
<output>8.4</output>

<result>8.4</result>