Sims Computing has $1,625,000 in current assets and $636,000 in current liabilities. They wish to increase their inventory levels from the current level of $400,000. They will borrow on a short term note payable to acquire the additional inventory. A covenant in an existing bond indenture agreement requires that the firm maintain a current ratio of at least 2. How much can their notes payable increase while still maintaining a current ratio of 2? In other words, what is the maximum additional.