An object is located at $2 \mathrm{km}$ beneath the surface of the water. If the fractional compression $\frac{\Delta V}{V}$ is $1.36\%$, the ratio of hydraulic stress to the corresponding hydraulic strain will be ______[Given: density of water is $1000 \mathrm{kg}{ \mathrm{m}}^{-3}$ and $g=9.8{ \mathrm{m} \mathrm{s}}^{-2}.$