Consider the singly reinforced section of a cantilever concrete beam under bending, as shown in the figure $(M25$ grade concrete, $Fe415$ grade steel). The stress block parameters for the section at ultimate limit state, as per $IS \; 456: 2000$ notations, are given. The ultimate moment of resistance for the section by the Limit State Method is_______________ $\mathrm{kN.m}$ (round off to one decimal place).
[Note: Here, $A_s$ is the total area of tension steel bars, $b$ is the width of the section, $d$ is the effective depth of the bars, $\mathrm{f}_{\text {ck }}$ is the characteristic compressive cube strength of concrete, $f_y$ is the yield stress of steel, and $x_u$ is the depth of neutral axis.]
