The three friends weighed together. Bingbing weighed 25.7 kilograms, Junjun was 0.72 kilograms lighter than Bingbing, and Ding Ding was 1.4 kilograms lighter than Junjun. How many kilograms does Ding Ding weigh?
三个小伙伴一起称体重，兵兵的体重是25.7千克，军军比兵兵轻0.72千克，丁丁比军军轻1.4千克，丁丁的体重是多少千克？
<gadget id="calculator">25.7 - 0.72 - 1.4</gadget>
<output>23.58</output>

<result>23.58</result>