Okay, let’s tackle this. So Leo Donovan has 63 years of experience as an accountant, which is extremely rare and valuable. His experience as the owner of his own CPA firm also adds to his credibility. Skills like accounting, tax, and process improvement are in demand, especially in the accounting and finance industry. Location is St Louis, Missouri, which is a mid-sized city with a relatively stable economy. Considering his extensive experience, skills, and location, I would estimate his hourly rate to be around $150. This is a conservative estimate, as top-level accountants with similar experience can charge $250-$500 per hour or more.