A piece of wood with a length of 40 decimeters is sawed 4 times, what is the average length of each section in decimeters
一把一根40分米长的木头，锯4次，平均每段长是多少分米
<gadget id="calculator">4 + 1</gadget>
<output>5</output>

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

<result>8</result>