The steelmaking plant made a total of 7,200 tons of steel in the first 4 days of a week, and an average of 2,500 tons of steel every day in the last 3 days. How many tons of steel was made on average this week?
炼钢厂在一星期的前4天共炼钢0.72万吨，后3天平均每天炼钢0.25万吨，这一星期平均每天炼钢多少万吨？
<gadget id="calculator">0.25 * 3</gadget>
<output>0.75</output>

<gadget id="calculator">0.75 + 0.72</gadget>
<output>1.47</output>

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

<gadget id="calculator">1.47 / 7</gadget>
<output>0.21</output>

<result>0.21</result>