Find the final amount in the following retirement account, in which the rate of return on the account and the regular contribution change over time.

Find the final amount in the following retirement​ account, in which the rate of return on the account and the regular contribution change over time.

​$480 per month invested at 5​%, compounded​ monthly, for 6 ​years; then ​$582 per month invested at 7​%, compounded​ monthly, for 6 years.

What is the amount in the account after 12 ​years?

​ ​(Round to the nearest dollar as​ needed.)

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