The garment factory plans to produce a batch of garments. It is completed on the first day (3/8), and the rest is completed on the second day (9/20). There are still 55 sets left unfinished. How many sets of garments were originally planned to be processed?
服装厂计划制作一批服装，第一天完成了(3/8)，第二天完成了余下的(9/20)，还剩下55套没有完成．原计划加工服装多少套？
<gadget id="calculator">9 / 20</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">1 - (9/20)</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">55 / (11/20)</gadget>
<output>100</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 - (3/8)</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">100 / (5/8)</gadget>
<output>160</output>

<result>160</result>