43 students from Class 3, Grade 5 went to the photo studio to take a group photo, and the price was 20.50 yuan for 3 photos. In addition, there is a fee of 0.5 yuan for printing one photo. If the whole class takes one photo, how much will it cost in total?
五年级三班43名学生去照相馆拍集体照留念，给3张照片，价格是20.50元．另外加洗一张收费0.5元，若全班每人一张照片，一共需付多少元？
<gadget id="calculator">43 - 3</gadget>
<output>40</output>

<gadget id="calculator">40 * 0.5</gadget>
<output>20</output>

<gadget id="calculator">20 + 20.5</gadget>
<output>40.5</output>

<result>40.5</result>