Ever since I heard about Facebook buying WhatsApp a few weeks ago for billions of dollars, I really wanted to spell out this unbelievable story for you. Between some research on my part with business friends and a great story that is about to be published in Forbes, you will have enough of the facts to talk about it with your children and grandchildren

I doubt that when Jan Koum, 38 and Brian Acton, 42, founders of WhatsApp, started their company in 2009, they ever thought they would become billionaires just five years. But that’s exactly what happened when Facebook bought WhatsApp for $4 billion in cash, $12 billion in stock plus $3 billion in restricted shares.

WhatsApp is an instant message company that has handled 10 billion messages per day.

Koum was an engineer who moved from Ukraine to the U.S. with very little money. He will join the Facebook board and, after taxes, pocket $6.8 billion.

Acton was ex-Yahoo engineer who got turned down for jobs at Twitter and Facebook. He will make $3 billion after tax.

WhatsApp only generated $20 million in revenue but Zuckerberg believes this app is going to make him a lot of money.

Read the inside scoop from Forbes on WhatsApp by just clicking here.