hi this is practice problem i am stuggling with. thanks for your help in advance!

You've decided you want to retire in 40 years with $3,000,000 in your retirement account at that time. How much do you need to invest each month for the next 40 years to meet that goal? Assume an annual growth rate of 9%. (There is no adjustment for inflation.) Please consider whether your answer will use a negative or not. Round to 4 decimal points