A transport team transported 84.5 tons on the first day, 18 tons more than the second day, and 57.5 tons less than twice the third day. How many tons are shipped on average per day?
一个运输队，第一天运货84.5吨，比第二天多运18吨，比第三天的2倍少57.5吨．平均每天运货多少吨？
<gadget id="calculator">84.5 - 18</gadget>
<output>66.5</output>

<gadget id="calculator">84.5 + 57.5</gadget>
<output>142</output>

<gadget id="calculator">142 / 2</gadget>
<output>71</output>

<gadget id="calculator">84.5 + 66.5 + 71</gadget>
<output>222</output>

<gadget id="calculator">222 / 3</gadget>
<output>74</output>

<result>74</result>