In the figure $PQ, P{O}_1$ and $O_{1}Q$ are the diameters of semicircles $C_1, C_2$ and $C_3$ with centres at $O_1, O_2$ and $O_3$ respectively and the circle $C_4$ touches the semicircles $C_1,C_2$ and $C_3$. If $PQ=24$ units and the area of the circle $C_4$ is $A$ sq. units, then the value of $\frac{8\pi }{A}$ is equal to $\left(\mathrm{here}, P{O}_1=O_{1}Q\right)$. If your answer is K, mark 2K as answer after rounding off to nearest integer.