You planned to retire after 20 years your goal is to create a fund that will allow you to receive XXXXXXXXXXevery year until infinity, how much should you deposit after 6 years in an account that...

You planned to retire after 20 years your goal is to create a fund that will allow you to

 receive 300000 every year until infinity, how much  should you deposit after 6 years in an account that earns 12% to accumulate the retirement fund that will be invested in an account that earns 10% annually?