When opening an IRA account, investors have two options.

With a regular (traditional) IRA account, funds added are not taxed initially, but are taxed when withdrawn.

With a Roth IRA, the funds are taxed initially, but not when withdrawn.

If an investor wants to contribute $15,000 before taxes to an IRA, what will be the difference after 30 years between the two options? Assume that the investor is currently in the 25% tax bracket, and that the IRA will earn 6% per year. (Show work)