$$4 \frac { 4 } { 5 } GDHNN$$
$\frac{24DGHN^{2}}{5}$
$$\frac{4\times 5+4}{5}GDHN^{2}$$
$$\frac{20+4}{5}GDHN^{2}$$
$$\frac{24}{5}GDHN^{2}$$
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