To find out how much water the dishwasher uses in each wash, you can divide the total amount of water used in six washes by the number of washes. In this case, the dishwasher uses 238.5 litres of water in six washes.
Here is how you can calculate it:
238.5 litres ÷ 6 washes = 39.75 litres per wash
Therefore, the dishwasher uses approximately 39.75 litres of water in each wash.