$$\frac{ { 8 }^{ 12 } }{ { 8 }^{ -4 } } \times \frac{ { 8 }^{ 2 } }{ { 10 }^{ 18 } }$$
$\frac{68719476736}{3814697265625}=0.018014399$
$$8^{16}\times \frac{8^{2}}{10^{18}}$$
$$281474976710656\times \frac{8^{2}}{10^{18}}$$
$$281474976710656\times \frac{64}{10^{18}}$$
$$281474976710656\times \frac{64}{1000000000000000000}$$
$$281474976710656\times \frac{1}{15625000000000000}$$
$$\frac{68719476736}{3814697265625}$$
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$\frac{2 ^ {36}}{5 ^ {18}} = 0.018014398509481985$