Answer:
.5l means that you are going to add 1/2 cups of lemon juice for every bath that you make. If you made one batch, you would use 1/2 of lemon juice. If you made 2 batches you will add 1 cup of lemon juice and so on.
2s means that you will add 2 cups of sugar for each batch. If you made one batch, you would add 2 cups of sugar, if you made 2 batches you would add 4 cups nd so on.
Explanation: