Copper wire drift velocity

$1\mathrm{.}0$p $8$ A copper wire of radius $2mm$ carries a constant current of $68mA.$ Find the average drift velocity of the electrons if the density of copper is $9000\mathrm{.}0k\frac{g}{m^3},$ assuming one conduction electron per copper atom.

$($Please answer in SI unit and multiply your answer by ${10}^7)$