Software and hardware for optimizing the cell design of robotic picking lines have an installed cost of $$78,000$ with no residual value after $7$ years. For years $2$ and $6,$ use DDB $($Double Declining Balance$)$ book depreciation.

Determine the depreciation charge.

The depreciation charge for year $2$ is determined to be $

$.$

The depreciation charge for year $6$ is determined to be $

$.$