Hallderame Inc., produces and sells high quality products, with most sales recorded in locations across Eastern Ontario. For this current fiscal year $18,200$ of their products were sold, resulting in $$648,535$ of sales revenue, $$98,800$ of variable costs, and $$34,200$ of fixed costs.

What is the total sales revenue that must be earned to achieve an operating income of $$207,000$ considering the details provided?