There is no repeated factor. 10-6 = 1/1000000 or a millionth.
Ten to the negative sixth power in decimal form is 0.000001
3 to the negative sixth power equals 0.00137174211
Five to the negative sixth power equals 0.000064
91,000,000
0.545 to times ten to the negative sixth power = 0.545 x 10^-6(This equates to 0.000000545)
do negative 4 times 4 6 times
you have to negative the five than the tenths and that all!
Five tenths to the power of -6 is 64
x squared times y to the negative four thirds power
3^6 = 729
(-1/2)6=1/64
You multiply 10x10x10x10x10x10 (10 appears 6 times as a factor).