HUDSONVILLE, Mich. (WZZM) -- Kristie Hamilton has three girls within 17 months of each other. Simple math tells you that's not possible, until you realize two of the three are twins.

Hamilton has a master's degree --again, simple math told her paying daycare for three kids doesn't add up --so she created a career for herself as a coupon expert.

"I started couponing a year and a half ago, and I started teaching couponing classes in my neighborhood," says Hamilton.

The classes are one hour long and cost $15 per person and, according to Hamilton, the investment is paid back immediately.

"If you're not paying yourself back $20 to $40 an hour couponing, it doesn't make sense," she says. "The method I teach you, you're going to save at-least $1,200 a year and that's for a single person."

One thingHamilton preaches is her "clipless couponing method." All it requiresis an organized box with 12individual folders, one for each week over a three monthperiod.

"I don't even look at the inserts," she says."I just put them in thebox in the according file. I don't like to cut every week because I feel like that is taking time away."

With this method, you know exactly where to find the coupons necessary to match them up with sales. Then you can clip only the ones you need.

Hamilton also writes for couponcabin along with another mother, Kate Gosselin. But the best way to take advantage of Hamilton's insight is on her own website, "Coupon Classes by Kristie."To get there, type "Coupon Classes by Kristie" on Facebook.

"Every single week I do my own shopping list, I'll put a picture of it and then I'll send the list if that's something they want," says Hamilton. "After you've liked my page, if you want everything I got this week I will e-mail it to you and you can get the exact same savings."

Those savings can be staggering. On May 20th Hamilton spent $119 at Meijer and saved $104. On a recent trip to Target, Kristie spent $22 and saved $71.

As Hamilton says, once you save on the ones you love, you can start spending money with the ones you love.

"You could go to Mexicoon the$1,200 a year savings,"she says.