[cheerful upbeat music] ♪ - THANK GOODNESS FOR TODAY'S MATH LESSON. MATH IS SO IMPORTANT, BECAUSE WITHOUT IT, I WOULDN'T KNOW HOW MANY DAYS THERE ARE UNTIL MY BIRTHDAY. THERE ARE... 182 DAYS UNTIL MY ...
Her progress was speedy, and he decided that the method he'd improvised, would work for others. So he began putting short math lessons on the Internet, never showing his face, but keeping it simple ...
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