The thermal conductivity of copper is $400 \text{ W/(m}\cdot\text{K)}$. Calculate its value in $\text{cal/(cm}\cdot\text{s}\cdot^{\circ}\text{C)}$. ($1 \text{ cal} = 4.184 \text{ J}$, $1 \text{ m} = 100 \text{ cm}$, $\Delta 1 \text{ K} = \Delta 1^{\circ}\text{C}$)