Refer to the original data. The Marketing Department thinks that a fancy new package for the laptop computer battery would grow sales. The new package would increase packaging costs by $$0\mathrm{.}80$ per unit. Assuming no other changes, how many units would have to be sold each month to attain a target profit of $$4,400?$

Note: Do not round intermediate calculations. Round final answer up to the nearest whole unit.

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