Now there is a piece of wood that is 20 meters long. Xiao Ming wants to saw it into 5-meter-long pieces. How many times does he need to saw it?
现在有一根木头长20米，小明想锯成5米长的小段，一共要锯几次？
<gadget id="calculator">20 / 5</gadget>
<output>4</output>

<gadget id="calculator">4 - 1</gadget>
<output>3</output>

<result>3</result>