Northern Consolidated experienced a $1,800,000 auto liability loss. At the time of the loss, the company had an umbrella liability policy with a $5,000,000 each occurrence limit and $50,000 self-insured retention. Due to a risk management error, it had failed to maintain the underlying auto liability policy with a $1,000,000 each occurrence limit. How much, if any, will Northern Consolidated's umbrella policy pay for this loss