Given that the perimeter of a square is 360 cm, what is its side length in decimeters
已知正方形的周长是360厘米，它的边长是多少分米
<gadget id="calculator">360 / 4</gadget>
<output>90</output>

<gadget id="calculator">90 / 10</gadget>
<output>9</output>

<result>9</result>