The clothing team made tops. On the first day, they completed the plan (3/5), and on the second day, they completed 50% of the plan. As a result, they made 20 more than the original plan. How many tops were originally planned to be produced?
服装小组做上衣，第一天完成了计划的(3/5)，第二天又完成计划的50%，结果比原计划多做20件，原计划生产上衣多少件？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) - 1</gadget>
<output>-1/2 = around -0.5</output>

<gadget id="calculator">(3/5) + (-1/2)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">20 / (1/10)</gadget>
<output>200</output>

<result>200</result>