Katherine Brewer is the owner and operator of Go-For-It LLC, a motivational consulting business. At the end of its accounting period, December 31, 2018, Go-For-It has assets of $575,000 and liabilities of $138,000. Using the accounting equation, determine the following amounts:

a. Owner's equity as of December 31, 2018. $

b. Owner's equity as of December 31, 2019, assuming that assets increased by $109,000 and liabilities increased by $33,000 during 2019. $