Answer
$0.000009$
Work Step by Step
$9\cdot10^{-6}=0.9\cdot10^{-5}=0.09\cdot10^{-4}=0.009\cdot10^{-3}=0.0009\cdot10^{-2}=0.00009\cdot10^{-1}=0.000009$
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