If you buy a top for 50 yuan, the pants are 9 yuan cheaper than the top, and the skirt is 6 yuan more expensive than the pants. How much is the skirt? What is the column type.
买一件上衣50元，裤子比上衣便宜9元，裙子比裤子贵6元，裙子多少钱？列式是多少．
<gadget id="calculator">50 - 9</gadget>
<output>41</output>

<gadget id="calculator">41 + 6</gadget>
<output>47</output>

<result>47</result>