Numerical Methods: Euler to Runge–Kutta · Easy problem

For $y' = y$, $y(0) = 1$, the exact value is $y(0.2) = e^{0.2}$. One Euler step with $h = 0.2$ produces an estimate $y_1$. Find the local error $e^{0.2} - y_1$, rounded to four decimal places.