1. **State the problem:** Janine has 2 litres (2000 millilitres) of orange squash and cups that hold 300 millilitres each. She fills as many cups as possible. We need to find how much orange squash is left after filling the cups. 2. **Formula and rules:** To find how many cups can be filled, divide the total volume by the volume per cup: $$\text{Number of cups} = \frac{\text{Total volume}}{\text{Volume per cup}}$$ 3. **Calculate number of cups:** $$\frac{2000}{300} = 6.\overline{6}$$ Since Janine can only fill whole cups, she fills 6 cups. 4. **Calculate volume used:** $$6 \times 300 = 1800 \text{ millilitres}$$ 5. **Calculate leftover volume:** $$2000 - 1800 = 200 \text{ millilitres}$$ 6. **State the answer:** Janine has 200 millilitres of orange squash left after filling as many cups as possible.