A 9.42 decimeter long iron wire is used to form an iron ring, what is the diameter of this iron ring in decimeters
用一根长9.42分米的铁丝围成一个铁环，这个铁环的直径是多少分米
<gadget id="calculator">9.42 / 3.14</gadget>
<output>3</output>

<result>3</result>