Master Chen wants to process a batch of parts. He made (3/10) on the first day and 95 on the second day. At this time, the ratio of the number of processed parts to the number of unprocessed parts is 4:3. How many parts are there?
陈师傅要加工一批零件，第一天做了(3/10)，第二天做了95个，这时已加工的零件个数与没有加工的零件个数比是4：3，这批零件有多少个？
<gadget id="calculator">4 + 3</gadget>
<output>7</output>

<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(4/7) - (3/10)</gadget>
<output>19/70 = around 0.271429</output>

<gadget id="calculator">95 / (19/70)</gadget>
<output>350</output>

<result>350</result>