team has five workers A, B, C, D, and E who jointly produce a certain part, among which A, B, C, and D produce 80 parts on average each, and A, B, C, and D produce 80 parts on average. The number of parts produced by A and B is 25 more than the average number of C and D, and the sum of the parts produced by A and B is three times that of E. What is the average number of parts produced by five people?
一个小组有A，B，C，D，E五名工人共同生产某种零件，其中A，B，C，D四人平均每人生产80个零件，A，B，C，D四人平均生产的零件个数比C和D的平均数多25个，A与B生产零件的和是E的3倍，则五人生产零件的平均数是多少．
<gadget id="calculator">80 * 4</gadget>
<output>320</output>

<gadget id="calculator">80 - 25</gadget>
<output>55</output>

<gadget id="calculator">55 * 2</gadget>
<output>110</output>

<gadget id="calculator">320 - 110</gadget>
<output>210</output>

<gadget id="calculator">210 / 3</gadget>
<output>70</output>

<gadget id="calculator">320 + 70</gadget>
<output>390</output>

<gadget id="calculator">390 / 5</gadget>
<output>78</output>

<result>78</result>