<prompt> Human: For 30 years, my calculation says 7.17, which just doesnt seem right.Say you invest x each year for 30 years with a return of investment of 7.17Total investment from your end 30 xTotal return you get: x 1.0717 x 1.0717 x 1.0717... 30 times Sum of GP 97.4 xNow a 4 inflation rate, over 30 years equals: 1.0430 3.24Effectively your money will amount to: 97.4 x 3.24 30.06 xWhich is exactly how much you invested. Im just wondering if my maths andor economics is wrong or do I really need 7.17 roi just to maintain my money?  <response>: Uhhh... 4.Youre overthinking this. 