A corporate treasurer wishes to accumulate a total of $$1,000,000$ thirty years from today $($at the end of year $30).$ He plans to make equal semiannual deposits into an account offering $7$ percent compounded semiannually. What must be the amount of these semiannual deposits if the first deposit will be made two and one$-$half years from today and the last deposit will be made six months before the $$1,000,000$ is needed?