The sixth grade student folded 180 origami cranes on the first day, and a total of 315 on the second and third days. How many are folded on average per day?
六年级同学折纸鹤，第一天折了180只，第二天和第三天共折了315只，平均每天折了多少只？
<gadget id="calculator">180 + 315</gadget>
<output>495</output>

<gadget id="calculator">495 / 3</gadget>
<output>165</output>

<result>165</result>