Answer
$\approx 3.6^\circ$
Work Step by Step
We are given that the angle subtended by the image is 8$\times$ the angle subtended by the object.
$$\theta_{\rm image}=8\theta_{\rm object}$$
where, for small angle approximation, $\theta_{\rm object}=\dfrac{h}{s}$
Hence,
$$\theta_{\rm image}=\dfrac{8h}{s}$$
We need it in degrees, so
$$\theta_{\rm image}=\dfrac{8h}{s}\;\rm rad\cdot\dfrac{180^\circ}{\pi\;\rm rad}$$
Plugging the known;
$$\theta_{\rm image}=\dfrac{8(0.14)(180)}{18\pi}=\color{red}{\bf 3.565^\circ}$$
