Ellis's backyard has a 6.256.256, point, 25 by 6.25\,\text{m}6.25m6, point, 25, space, m patio. she would like to build a 1.5\,\text{m}1.5m1, point, 5, space, m wide extension around 333 sides of the patio, as the figure shows. she will buy 0.250.250, point, 25 by 0.25\,\text{m}0.25m0, point, 25, space, m tiles that come 252525 to a package.

how many packages does ellis need to buy to build the extension?