Suppose that a perfectly competitive firm faces a market price of $7 perunit, and at this price theupward-sloping portion of thefirm's marginal cost curve crosses its marginal revenue curve at an output level of 1,400 units. If the firm produces 1,400 units, its average variable costs equal $6.50 perunit, and its average fixed costs equal $0.80 per unit.

What is thefirm's profit-maximizing(or loss-minimizing) outputlevel?

(Enter your response as a whole number include the minus sign if necessary.)