Master Li processed a batch of parts. On the first day, he processed 48 parts. On the second day, he processed 25% more than the first day. On the third day, he processed 5% more than the second day. A total of 95% of the parts were completed in three days. How many parts are there in this batch?
李师傅加工一批零件，第一天加工了48个，第二天比第一天多加工25%，第三天比第二天多加工5%，三天共完成这批零件的95%．这批零件共有多少个？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">48 * (5/4)</gadget>
<output>60</output>

<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">1 + (1/20)</gadget>
<output>21/20 = around 1.05</output>

<gadget id="calculator">60 * (21/20)</gadget>
<output>63</output>

<gadget id="calculator">48 + 60 + 63</gadget>
<output>171</output>

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

<gadget id="calculator">171 / (19/20)</gadget>
<output>180</output>

<result>180</result>