Last Thursday, the grandparents residing in the affluent suburb of Brighton, one of the wealthiest areas in the state, possessed one of the four division one winning tickets in the Powerball draw, earning a $20 million portion of the total $80 million jackpot.

However, their ticket was unregistered, meaning officials had to wait for them to claim their prize, which took a few days.

“This is unbelievable. We had no idea, and this whole time the ticket was just sitting on our fridge,” the grandmother said.

“We’ve both been really busy, so we just forgot to check it.”

She said the couple would look after their children and grandchildren, and buy “a little house”.

“Heck! I don’t know if I should keep working or retire,” she said.

“I’ve had a radical change of plans for the day, that’s for sure. It will take a long time for this to sink in.”

The winning entry was purchased from East Brighton Newsagency, 613 Hampton Street, Brighton.

There are many different ways to get help and information about gambling. You can visit the National Gambling Helpline or call on 1800 858 858.