class of fifth grade went to take a group photo, and the price was 58.5 yuan for 4 photos. In order to ensure that each of the 36 people in the class had a photo, they had to print another photo. In this way, the total payment was 138.5 yuan. How much is it for printing a photo?
五年级一班同学去照集体相，定价58.5元给4张照片，为保证全班36人每人一张照片，需另外加印，这样一共付款138.5元，加印一张相片多少元？
<gadget id="calculator">138.5 - 58.5</gadget>
<output>80</output>

<gadget id="calculator">36 - 4</gadget>
<output>32</output>

<gadget id="calculator">80 / 32</gadget>
<output>5/2 = around 2.5</output>

<result>5/2 = around 2.5</result>