The marketing department of a company estimates that the demand for a product is given byp= 1000.0001x,

wherepis the price per unit andxis the number of units. The costCof producingxunits is given by

C=310,000+25x

and the profitPfor producing and sellingxunits is given by

P=RC=xpC.

Use a graphing utility to estimate the number of units that would produce a maximum profit. (Round your answer to the nearest thousand.)