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B=\frac{\left(\frac{2^{-1}}{3}\right)^{9}}{\left(\left(-\frac{2^{-7}}{3}\right)^{2}\right)^{5}}
To multiply powers of the same base, add their exponents. Add 5 and 4 to get 9.
B=\frac{\left(\frac{2^{-1}}{3}\right)^{9}}{\left(-\frac{2^{-7}}{3}\right)^{10}}
To raise a power to another power, multiply the exponents. Multiply 2 and 5 to get 10.
B=\frac{\left(\frac{\frac{1}{2}}{3}\right)^{9}}{\left(-\frac{2^{-7}}{3}\right)^{10}}
Calculate 2 to the power of -1 and get \frac{1}{2}.
B=\frac{\left(\frac{1}{2\times 3}\right)^{9}}{\left(-\frac{2^{-7}}{3}\right)^{10}}
Express \frac{\frac{1}{2}}{3} as a single fraction.
B=\frac{\left(\frac{1}{6}\right)^{9}}{\left(-\frac{2^{-7}}{3}\right)^{10}}
Multiply 2 and 3 to get 6.
B=\frac{\frac{1}{10077696}}{\left(-\frac{2^{-7}}{3}\right)^{10}}
Calculate \frac{1}{6} to the power of 9 and get \frac{1}{10077696}.
B=\frac{\frac{1}{10077696}}{\left(-\frac{\frac{1}{128}}{3}\right)^{10}}
Calculate 2 to the power of -7 and get \frac{1}{128}.
B=\frac{\frac{1}{10077696}}{\left(-\frac{1}{128\times 3}\right)^{10}}
Express \frac{\frac{1}{128}}{3} as a single fraction.
B=\frac{\frac{1}{10077696}}{\left(-\frac{1}{384}\right)^{10}}
Multiply 128 and 3 to get 384.
B=\frac{\frac{1}{10077696}}{\frac{1}{69712754611742420055883776}}
Calculate -\frac{1}{384} to the power of 10 and get \frac{1}{69712754611742420055883776}.
B=\frac{1}{10077696}\times 69712754611742420055883776
Divide \frac{1}{10077696} by \frac{1}{69712754611742420055883776} by multiplying \frac{1}{10077696} by the reciprocal of \frac{1}{69712754611742420055883776}.
B=6917529027641081856
Multiply \frac{1}{10077696} and 69712754611742420055883776 to get 6917529027641081856.