A children's top is 60 yuan, a pair of trousers is 13 yuan cheaper than the top, and a skirt is 9 yuan more expensive than the trousers. How much is this dress?
一件儿童上衣60元，一条长裤比上衣便宜13元，一条裙子又比长裤贵9元．这条裙子多少钱？
<gadget id="calculator">60 - 13</gadget>
<output>47</output>

<gadget id="calculator">47 + 9</gadget>
<output>56</output>

<result>56</result>