There are two bookshelves with a total of 173 books. After removing 38 books from the first floor, the number of books on the second floor is 6 times more than that on the first floor. How many books are there on the second floor?
有两层书架，共有书173本，从第一层拿走38本后，第二层的书比第一层的2倍还多6本，第二层有多少本书．
<gadget id="calculator">173 - 6 - 38</gadget>
<output>129</output>

<gadget id="calculator">1 + 2</gadget>
<output>3</output>

<gadget id="calculator">129 / 3</gadget>
<output>43</output>

<gadget id="calculator">2 * 43</gadget>
<output>86</output>

<gadget id="calculator">86 + 6</gadget>
<output>92</output>

<result>92</result>