Process a different type of machine parts. It is known that the number of parts of type B is that of type C (4/5), which is 85 less than that of type C. The number of parts of type A accounts for 25% of the total number of parts. How many parts are there in this batch? indivual?
加工一种不同型号的机器零件，已知乙种零件个数是丙种的(4/5)，比丙种少85个，甲种零件个数占总零件个数的25%，这批零件有多少个？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 - (4/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">85 / (1/5)</gadget>
<output>425</output>

<gadget id="calculator">425 - 85</gadget>
<output>340</output>

<gadget id="calculator">425 + 340</gadget>
<output>765</output>

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">765 / (3/4)</gadget>
<output>1_020</output>

<result>1_020</result>