Xiaohong bought a copy of "Primary School Students Know Everything" and spent 25.5 yuan. She still has 24.5 yuan left. How much money did Xiaohong bring?
小红买了一本《小学生全知道》用去25.5元，她还剩下24.5元，小红带了多少元钱．
<gadget id="calculator">25.5 + 24.5</gadget>
<output>50</output>

<result>50</result>