Two wires as shown in the figure below, made of steel and have breaking stress of \( 12 \times 10^{8} \, \text{N/m}^{2} \). Area of cross-section of upper wire is \( 0.008 \, \text{cm}^{2} \) and of lower wire is \( 0.004 \, \text{cm}^{2} \). The maximum mass that can be added to pan without breaking any wire is ______ kg.
\( \text{(take } g = 10 \, \text{m/s}^{2} \text{)} \)
