Apollo manufactures PDAs at a variable cost of V(x)= 0.000003x^3 - 0.03x^2 +200x dollars, where x denotes the number of units manufactured per month. The monthly fixed cost attributable to the division that produces these PDAs is $100,000. Find a function C that gives the total cost incurred by the manufacture of x PDAs. What is the total cost incurred in producing 2000 units/month?