k means 1000
d means 1/10
m means 1/1000
c means 1/100
[tex]2 \ kl = 2 \times 1000 \ l=2000 \ l \\
200 \ l \\
20 000 \ dl= 20 000 \times \frac{1}{10} \ l=2000 \ l \\
2000 \ ml= 2000 \times \frac{1}{1000} \ l=2 \ l \\
2000 \ cl = 2000 \times \frac{1}{100} \ l=20 \ l \\ \\
\boxed{2 \ kl = 20000 \ dl}
[/tex]
