need help with this please

. You figure that you need $500,000 in savings to retire in 40 years. You can earn 4.000%, compounded monthly. How much do you need to save every month to have $500,000 in 40 years? Answer in S, to two decimal places le. Sx.xx.xx Arabbal. Varle will add 1 nar month every month. The account earns 4.200%