If a 200 cm long wooden strip is to be sawed into 10 cm long pieces, how many times does it need to be sawed?
一根200厘米长的木条，要锯成10厘米长的小段，需要锯几次？
<gadget id="calculator">200 / 10</gadget>
<output>20</output>

<gadget id="calculator">20 - 1</gadget>
<output>19</output>

<result>19</result>