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\(8^4.16^5=2^{12}.2^{20}=2^{32}\)
\(5^{40}.125^5.25^3=5^{40}.5^{15}.5^6=5^{61}\)
\(27^4.81^{10}=3^{12}.3^{40}=3^{52}\)
\(10^3.100^5.1000^4=10^3.10^{10}.10^{12}=10^{25}\)
\(8^4\cdot16^5=\left(2^3\right)^4\cdot\left(2^4\right)^5=2^{12}\cdot2^{20}=2^{32}\)
\(5^{40}\cdot125^2\cdot25^3=5^{40}\cdot\left(5^3\right)^2\cdot\left(5^2\right)^3=5^{40}\cdot5^6\cdot5^6=5^{52}\)
\(27^4\cdot81^{10}=\left(3^3\right)^4\cdot\left(3^4\right)^{10}=3^{12}\cdot3^{40}=3^{52}\)
\(10^3\cdot100^5\cdot1000^4=10^3\cdot\left(10^2\right)^5\cdot\left(10^3\right)^4=10^3\cdot10^{10}\cdot10^{12}=10^{25}\)
\(\frac{5^3.90.4^3}{25^2.3^2.2^{13}}=\frac{5^3.2.3^2.5.2^6}{5^4.3^2.2^{13}}=\frac{5^4.2^7.3^2}{5^4.3^2.2^{13}}=\frac{2^7}{2^{13}}=\frac{128}{8192}=\frac{1}{64}\)
\(\frac{\left(-5\right)^3.40.4^3}{125.\left(-2\right)^{14}.\left(-1000\right)^0}\)
\(=\frac{\left(-125\right).40.64}{125.16384.1}\)
\(=\frac{\left(-1\right).5}{1.32.1}=-\frac{5}{32}\)
\(\frac{\left(-5\right)^3.40.4^3}{125.\left(-2\right)^{14}.\left(-1000\right)^0}\)
\(=\frac{\left(-5\right)^3.2^3.5.\left(2^2\right)^3}{5^3.2^{14}.1}\)
\(=\frac{\left(-5\right)^3.2^3.5.2^6}{5^3.2^{14}}\)
\(=\frac{\left(-5\right)^3.2^9.5}{5^3.2^{14}}\)
\(=\frac{-5}{2^5}\)
\(=\frac{-5}{32}\)