Uncle Wang brought 900 yuan to buy wood, bought 28 pieces of wood, and left 4 yuan. How much is each piece of wood?
王叔叔带了900元买木材，买了28根木材，剩下4元．每根木材多少元？
<gadget id="calculator">900 - 4</gadget>
<output>896</output>

<gadget id="calculator">896 / 28</gadget>
<output>32</output>

<result>32</result>