Answer:
20 Liters
Explanation:
One way to look at it is that there are 1000 mL in one L. But I think a better way in general for unti conversions is to do it like this.
20000 ml *
Where you can just cancel out the units. Hopefully it made sense. If you were converting from L to ml you would use
![(1000 mL)/(1 L)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/kd0ulyohhgcl3hf3xlqgw60ez1z3t5q270.png)