Evaluate
\frac{3km}{2000}
Differentiate w.r.t. k
\frac{3m}{2000}
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1.5\times \frac{1}{1000}km
Calculate 10 to the power of -3 and get \frac{1}{1000}.
\frac{3}{2000}km
Multiply 1.5 and \frac{1}{1000} to get \frac{3}{2000}.
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