Xiao Ming wants to buy 5 photo albums and 5 mechanical pencils. It costs 28.75 yuan to buy a photo album and 11.15 yuan to buy a mechanical pencil. How much more expensive is a photo album than a mechanical pencil? (List the formula in two ways without answering)
小明要买5本相册和5支自动铅笔，买相册用了28.75元，买自动铅笔用了11.15元，一本相册比一支自动铅笔贵多少元？(用两种方法列出式子，不用解答)
<gadget id="calculator">28.75 / 5</gadget>
<output>5.75</output>

<gadget id="calculator">11.15 / 5</gadget>
<output>2.23</output>

<gadget id="calculator">5.75 - 2.23</gadget>
<output>3.52</output>

<result>3.52</result>