If 40 books of the same thickness are stacked, their height is 88 cm. If 15 books of the same thickness are stacked, what is the height in cm?
将40本厚度相同的书叠起来，他们的高度为88厘米，将15本同样的书叠起来，高度是多少厘米？
<gadget id="calculator">88 / 40</gadget>
<output>11/5 = around 2.2</output>

<gadget id="calculator">(11/5) * 15</gadget>
<output>33</output>

<result>33</result>