SALT LAKE CITY, Utah (CBS) — Okay, so how good is your math? A Utah family, once told they could never have a natural pregnancy, hit the twin lottery.

Hospital staff says you’re more likely to be struck by lightning twice than to have a set of twins give birth to twins. The odds, of course, are even longer to do it twice.

But that’s exactly what happened to identical twin sisters Kelli Wall and Kerri Bunker and their husbands from Salt Lake City. Now altogether they have eight twin babies.

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Some call it a statistical anomaly, but the family calls it a miracle.

“We just feel these (babies) are a gift from God,” Bunker said. ”She has four children (ages) 5 and under. And I have five children (ages) 4 and under. I had a boy-girl first, and she had the two girls, and then we flip-flopped, she did the boy-girl, and I did boy-boy. So we’ve got our bases covered.”

Both sisters became pregnant through In Vitro Fertilization.

The two families have moved near one another so that the twins can grow up together.