A, B, and C take a total of 100 yuan to travel. A and B spent an average of 20.55 yuan, B and C spent 22.5 yuan, and C and A spent an average of 28.65 yuan. After they came back, they wanted to divide the remaining money equally, but they couldn't divide it no matter what. A came up with an idea, whoever spent the least money among the three would give the rest of the money to him. That's it. Excuse me, who spends the least money? How much did he get?
甲乙丙三人共带100元钱去旅游．甲乙二人平均花了20.55元，乙丙二人花了22.5元，丙甲二人平均花了28.65元．回来后，他们想把剩下的钱平分，结果怎么样也分不开．甲出了一个主意，三人中谁花钱最少，就把分剩下的钱给谁．这样就分开了．请问，花钱最少是谁？他分到了多少钱？
<gadget id="calculator">20.55 * 2</gadget>
<output>41.1</output>

<gadget id="calculator">22.5 * 2</gadget>
<output>45</output>

<gadget id="calculator">28.65 * 2</gadget>
<output>57.3</output>

<gadget id="calculator">41.1 + 45 + 57.3</gadget>
<output>143.4</output>

<gadget id="calculator">143.4 / 2</gadget>
<output>71.7</output>

<gadget id="calculator">100 - 71.7</gadget>
<output>28.3</output>

<result>28.3</result>