Stumptown Coffee Roasters began the year with $$100,000$ in assets and $$70,000$ in liabilities. During the year, they earned $$98,000$ in revenues and recorded $$77,000$ in expenses. They also paid dividends of $$22,000.$ If Stumptown ended the year with $$150,000$ in assets and $$85,000$ in liabilities, what is the amount of additional investment by stockholders during the year?