and B jointly accept the processing task of a batch of parts, which can be completed within 11 days of cooperation. As a result, after the two have cooperated for 7 days, B has another task, and A will do the rest alone. If A still works according to the original work efficiency, it will take 7 days to complete. In order to complete the task on schedule, A adopted new technology when doing it alone, which improved the work efficiency by 80%. In this way, not only the task was completed on schedule, but also 4 more parts were made. How many parts were originally planned to be processed in total?
甲、乙两人共同接受一批零件的加工任务，两人合作11天可以完成．结果两人合作7天后，乙另有任务，剩下的由甲单独做．如果甲仍按原来的工效，还需7天完成．为了能如期完成任务，甲单独做时采用了新技术，使工效提高了80%，这样不仅如期完成任务，还多做4个零件，问原计划一共要加工多少个零件？
<gadget id="calculator">1 / 11</gadget>
<output>1/11 = around 0.090909</output>

<gadget id="calculator">(1/11) * 7</gadget>
<output>7/11 = around 0.636364</output>

<gadget id="calculator">1 - (7/11)</gadget>
<output>4/11 = around 0.363636</output>

<gadget id="calculator">(4/11) / 7</gadget>
<output>4/77 = around 0.051948</output>

<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 + (4/5)</gadget>
<output>9/5 = around 1.8</output>

<gadget id="calculator">11 - 7</gadget>
<output>4</output>

<gadget id="calculator">(4/77) * (9/5) * 4</gadget>
<output>144/385 = around 0.374026</output>

<gadget id="calculator">(144/385) - (4/11)</gadget>
<output>4/385 = around 0.01039</output>

<gadget id="calculator">4 / (4/385)</gadget>
<output>385</output>

<result>385</result>