The bookstore shipped a batch of books, and the number of books sold on the first day was 10 less than (1/6) of this batch of books. At this time, there were still (7/8) unsold. How many books are there in this batch?
书店运来一批书，第一天卖出的比这批书的(1/6)少10本，这时还剩(7/8)没有卖．这批书有多少本？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">7 / 8</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">1 - (7/8)</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(1/6) - (1/8)</gadget>
<output>1/24 = around 0.041667</output>

<gadget id="calculator">10 / (1/24)</gadget>
<output>240</output>

<result>240</result>