The two masters and apprentices work together to process a batch of parts, the master processed 55% of this batch of parts, the apprentice processed 45% of this batch of parts, and the apprentice processed 80 fewer parts than the master. How many parts are there in total?
师徒两人共同加工一批零件，师傅加工了这批零件的55%，徒弟加工了这批零件的45%，徒弟比师傅少加工80个．这批零件一共有多少个？
<gadget id="calculator">55 / 100</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">45 / 100</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">(11/20) - (9/20)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">80 / (1/10)</gadget>
<output>800</output>

<result>800</result>