The fifth and sixth graders collected waste paper. The fifth grade collected 14.5 kilograms, which was 2.3 kilograms less than the sixth grade. How many kilograms of waste paper did the fifth and sixth grades collect?
五、六年级同学收集废纸，五年级收集了14.5千克，比六年级少收集了2.3千克．五、六年级一共收集了废纸多少千克？
<gadget id="calculator">14.5 + 2.3 + 14.5</gadget>
<output>31.3</output>

<result>31.3</result>