The school bought 5 towels and 5 packs of washing powder. The towels cost 35.5 yuan and the washing powder cost 22.5 yuan. How much is a towel more expensive than a piece of soap?
学校买来5条毛巾和5包洗衣粉，毛巾用去35.5元，洗衣粉用去22.5元，一条毛巾比一块肥皂贵多少元？
<gadget id="calculator">35.5 - 22.5</gadget>
<output>13</output>

<gadget id="calculator">13 / 5</gadget>
<output>13/5 = around 2.6</output>

<result>13/5 = around 2.6</result>