A firm plans to begin production of a new small appliance. The manager must decide whether to purchase the motors for the appliance from a vendor for $7.00 each or to produce them in house. There are two in house options.

Option 1 would have an annual fixed cost of $160000 and a variable cost of $5.90.

Option 2 would have an annual fixed cost of $192000 and a variable cost of $3.70.

Calculate the maximum quantity that would have the manager select purchasing the motors from the vendor.