A spot welding operation performed on two pieces of steel yielded a nugget with a diameter of $\text{5 mm}$ and a thickness of $\text{1 mm}$. The welding time was $\text{0.1 s}$. The melting energy for the steel is $\text{20 J/mm}^{3}$. Assuming the heat conversion efficiency as $10\%$, the power required for performing the spot welding operation is ________ $\text{kW} (\textit{round off to two decimal places}$).