Xiao Wang finished a batch of parts in three days. On the first day, he made 1/4 of the total number. On the second day, he made 5 more parts than on the first day. On the third day, he made 25 parts. How many parts are there in this batch?
小王三天做完一批零件，第一天做了总数的(1/4)，第二天比第一天多做5个，第三天做了25个，这批零件有几个？
<gadget id="calculator">25 + 5</gadget>
<output>30</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/4) + (1/4)</gadget>
<output>1/2 = around 0.5</output>

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

<gadget id="calculator">30 / (1/2)</gadget>
<output>60</output>

<result>60</result>