V   [———–11u ———]

       [—donation—-][ r ]                                 where r = remainder

T    [———————14u—————-]

      [—donation—-][ r ][ r ][ r ][ r ][ r ]       where 5r = remainder

25u =11400 => u = 456

11u = 5016,   14u=6384

r = 5016 – donation

5r = 6384-donation

5(5016-donation) = 6384-donation

5donation – donation = 25080-6384

4donation = 18696

Hence total donation = 2 donation = 18696/2 = $9384

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