10.0 mL of $0.05 \mathrm{M} \mathrm{KMnO}_4$ solution was consumed in a titration with 10.0 mL of given oxalic acid dihydrate solution. The strength of given oxalic acid solution is $\_\_\_\_$ $\times 10^{-2} \mathrm{~g} / \mathrm{L}$.
(Round off to the nearest integer)
