\[\left( - 2a^{3} \right)^{2} \cdot \left( - b^{5}c \right)^{3} \cdot \left( b^{6} \right)^{2} \cdot \left( 2,6a^{4} \right)^{2} =\]
\[= 4a^{6} \cdot \left( - b^{15}c^{3} \right) \cdot b^{12} \cdot 6,76a^{8} =\]
\[= - 27,04a^{14}b^{27}c^{3}.\]