Master Wang processed a batch of parts. On the first day, he processed 1/5 of all parts, and on the second day, he processed 70 parts. At this time, the ratio of processed parts to unprocessed parts is 3:2. The total number of parts in this batch is how many?
王师傅加工一批零件，第一天加工了全部零件的(1/5)，第二天有加工70个，这时已加工的与未加工的个数比是3：2，这批零件一共多少个？
<gadget id="calculator">3 + 2</gadget>
<output>5</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(3/5) - (1/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">70 / (2/5)</gadget>
<output>175</output>

<result>175</result>