Xiaohong weighs 36 kilograms this year, which is 2.5 kilograms more than last year. How many kilograms did she weigh last year?
小红今年重36千克，比去年增加了2.5千克，她去年的体重是多少千克？
<gadget id="calculator">36 - 2.5</gadget>
<output>33.5</output>

<result>33.5</result>