Xiaojun's weight is 36 kilograms, which is 0.4 kilograms lighter than Xiaohong's. How many kilograms do they weigh together?
小军的体重是36千克，比小红轻了0.4千克，他们两个的体重一共是多少千克？
<gadget id="calculator">36 - 0.4</gadget>
<output>35.6</output>

<gadget id="calculator">35.6 + 36</gadget>
<output>71.6</output>

<result>71.6</result>