Xiaoming brought 280 yuan and Xiaohua brought 170 yuan. They combined the money in the mall and bought two identical clothes. How much should Xiaohua pay Xiaoming?
小明带了280元钱，小华带了170元钱，在商场两人将钱合在一起正好买了两件相同的衣服，小华应该还小明多少钱？
<gadget id="calculator">280 + 170</gadget>
<output>450</output>

<gadget id="calculator">450 / 2</gadget>
<output>225</output>

<gadget id="calculator">225 - 170</gadget>
<output>55</output>

<result>55</result>