We assume that we have to convert from 13 km/lt to m/ml.
To do this conversion, we need to remember that:
1 km = 1000 m
1 lt = 1000 ml
Then, we can proceed as follows to convert those quantities:
[tex]13\cdot\frac{\operatorname{km}}{lt}\cdot\frac{1000m}{\operatorname{km}}\cdot\frac{1lt}{1000ml}=13\frac{m}{ml}[/tex]Then, the answer is 13 m/ml.