1. The problem asks how many children can each receive $\frac{1}{4}$ litre of orange juice from a total of 4 litres. 2. To find this, divide the total amount of orange juice by the amount each child receives: $$\text{Number of children} = \frac{4}{\frac{1}{4}}$$ 3. Dividing by a fraction is the same as multiplying by its reciprocal: $$\frac{4}{\frac{1}{4}} = 4 \times 4 = 16$$ 4. Therefore, 16 children can each be given $\frac{1}{4}$ litre of orange juice from 4 litres.