There is a stack of paper with a height of 4 decimeters. If it is divided into stacks every 5 cm, how many stacks can it be divided into?
有一摞纸，高4分米，如果按每5厘米分成一摞，可以分成几摞？
<gadget id="calculator">4 * 10</gadget>
<output>40</output>

<gadget id="calculator">40 / 5</gadget>
<output>8</output>

<result>8</result>