batch of parts is completed in two days on average. The qualified rate of parts produced on the first day is 90%, and the qualified rate of parts produced on the second day is 95%. A total of 1295 qualified parts are produced in two days. How many parts are there in this batch?
一批零件平均分两天完成，第一天生产零件合格率为90%，第二天生产零件合格率为95%，两天共生产出1295个合格零件，这批零件共有多少个．
<gadget id="calculator">90 / 100</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">95 / 100</gadget>
<output>19/20 = around 0.95</output>

<gadget id="calculator">(9/10) + (19/20)</gadget>
<output>37/20 = around 1.85</output>

<gadget id="calculator">(37/20) / 2</gadget>
<output>37/40 = around 0.925</output>

<gadget id="calculator">1_295 / (37/40)</gadget>
<output>1_400</output>

<result>1_400</result>