Richard invests $120.72 every month into his 401k. At the

Last updated: 7/14/2022

Richard invests $120.72 every month into his 401k. At the end of 30 years, he has a balance of $184,643.4. How much interest did he earn over 30 years? Round each answer to the nearest cent and do not enter the $ as part of your answer, enter a number only.