A 60 cm iron wire is cut into 15 cm long pieces, how many times should it be cut?
一根60厘米的铁丝剪成15厘米长的小段，要剪几次？
<gadget id="calculator">60 / 15</gadget>
<output>4</output>

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

<result>3</result>