Help please

How much should you deposit at the end of each month in an IRA that pays 8% compounded monthly to earn $100,000 per year from interest alone, while leaving the

principal untouched to be withdrawn at the end of each year after you retire in 30 years?

How much should you deposit at the end of each month in an IRA that pays 8% compounded monthly to earn $100,000 per year from interest alone, while leaving the

principal untouched to be withdrawn at the end of each year after you retire in 30 years?