$$4 \sqrt{ 4 \div 446 } \div { 4 }^{ 2 }$$
$\frac{\sqrt{446}}{892}\approx 0.023675686$
$$\frac{4\sqrt{\frac{2}{223}}}{4^{2}}$$
$$\frac{4\times \frac{\sqrt{2}}{\sqrt{223}}}{4^{2}}$$
$$\frac{4\times \frac{\sqrt{2}\sqrt{223}}{\left(\sqrt{223}\right)^{2}}}{4^{2}}$$
$$\frac{4\times \frac{\sqrt{2}\sqrt{223}}{223}}{4^{2}}$$
$$\frac{4\times \frac{\sqrt{446}}{223}}{4^{2}}$$
$$\frac{\frac{4\sqrt{446}}{223}}{4^{2}}$$
$$\frac{\frac{4\sqrt{446}}{223}}{16}$$
$$\frac{4\sqrt{446}}{223\times 16}$$
$$\frac{\sqrt{446}}{4\times 223}$$
$$\frac{\sqrt{446}}{892}$$
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