A cement factory produced 85 tons of cement every day in the first two days, and twice as much in the next two days. How many tons of cement does this cement factory produce on average these days?
一个一个水泥厂，前两天每天都生产水泥85吨，后两天的产量是前两天的2倍，这个水泥厂这些天平均每天生产水泥多少吨？
<gadget id="calculator">85 * 2</gadget>
<output>170</output>

<gadget id="calculator">85 * 2 * 2</gadget>
<output>340</output>

<gadget id="calculator">170 + 340</gadget>
<output>510</output>

<gadget id="calculator">2 + 2</gadget>
<output>4</output>

<gadget id="calculator">510 / 4</gadget>
<output>255/2 = around 127.5</output>

<result>255/2 = around 127.5</result>