A rectangle has a perimeter of 68 centimeters and a known length of 2.4 decimeters. What is the width in centimeters? (column equation solution)
一个长方形，周长是68厘米，已知长是2.4分米，宽是多少厘米？(列方程解答)
<gadget id="calculator">68 / 2</gadget>
<output>34</output>

<gadget id="calculator">2.4 * 10</gadget>
<output>24</output>

<gadget id="calculator">34 - 24</gadget>
<output>10</output>

<result>10</result>