Use Taylor's Theorem to obtain an upper bound for the error of the approximation. Then calculate the exact value of the error. (Round your answers to five decimal places.)

≈ 1+ 1 + ((1^2)/2!) + ((1^3)/3!) + ((1^4)/4!) + ((1^5)/5!)e

R5 <= .00378 (I understand how to do this part).

R5 = ??? (I need help on how to calculate the exact error value.)

Any help would be great, thanks!