Calculate the concentration of NaOH solution if 23.6 cm³ of it reacts completely with 125 cm³ of 0.125 mol dm⁻³ H2SO4.

Given Data:
Concentration of $\text{H}_2\text{SO}_4$ (A), $C_A = 0.125 \text{ mol dm}^{-3}$
Volume of $\text{H}_2\text{SO}_4$ (A) used, $V_A = 23.6 \text{ cm}^3$
Balanced reaction: $\text{H}_2\text{SO}_4 + 2\text{NaOH} \rightarrow \text{Na}_2\text{SO}_4 + 2\text{H}_2\text{O}$
Relative atomic masses: $\text{H}=1$, $\text{O}=16