bill – l'addition
When the bill came it had the cost of a dish on (addition) it – they had broken one while they were dining.
Note: You need to know that addition (bill) is feminine because if there is an adjective after addition (bill), it needs the adjective to accord. For example, 'the full bill' would be l'addition complète instead of complet.
Addition is feminine. Imagine a Labrador has eaten the bill.