The bookstore comes in with a batch of new books, and sells 1/5 of the total number on the first day, and 33 copies on the second day, leaving 25% of the total number unsold. What is the total number of new books in this batch?
书店进来一批新书，第一天卖出总数的(1/5)，第二天卖出33本，还剩总数的25%没有卖．这批新书的总数是多少本？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/5) - (1/4)</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">33 / (11/20)</gadget>
<output>60</output>

<result>60</result>