Cheap Chips Corp. monthly profit (in dollars) derived from the production and sale of device model VJG317 is given by P(q) = -q³+220q²-18q - 530 where q denotes how many hundreds of units of device model VJG317 are produced and sold each month. Find how many units (in hundreds) need to be sold to maximize the profit originating from production and sales of device model VJG317. hundred units must be sold. (Round to two decimal places.)

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