Answer:
The Loisels had to:
*Work terribly hard to pay off the borrowed money.
*Change their residence to save money for the debt.
Step-by-step explanation:
After going to the ball and coming back to their house the Loisels realized that the necklace had gone, and when they didn't find it anywhere they had to used the inheritance of Mr. Loisel and a loan to buy a necklace that matches the lost one, it took them 10 years of economic sacrifices to pay the debt.