Question
Three girls, Winnie, Yoko and Betty had a total of 5580 buttons. Some exchanges were made. First, Winnie gave Yoko as many buttons as Yoko had. After that, Yoko gave 13 of whatever she had then to Betty. Finally, Betty gave 14 of whatever she had to Winnie. As a result, they each had the same number of buttons. How many buttons did Winnie have at first?
5 m

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Three girls, Winnie, Yoko and Betty had a total of 5580 buttons. Some exchanges were made. First, Winnie gave Yoko as many buttons as Yoko had. After that, Yoko gave 13 of whatever she had then to Betty. Finally, Betty gave 14 of whatever she had to Winnie. As a result, they each had the same number of buttons. How many buttons did Winnie have at first?