Thanks MK, I'd missed that.
"Daniel claims that since the age of four, he has been able to do huge mathematical calculations in his head. So the makers of this documentary put him to the test, asking him to calculate 37 raised to the power of 4. He completed this in less than a minute, giving the correct answer of 1,874,161. While considering the question, it was observed that, he appeared to be drawing shapes on the table with his finger. When asked about this, he explained that he could see the numbers as shapes and colours in his mind. This breakdown or confusion of the senses is known as synethsesia.
Next he was asked to divide 13 by 97. This time the researchers had the answer to 32 decimal places, Daniel gave the answer and continued beyond 32. He claims he can do the calculations to 100 decimal places.
He appears to be doing the mathematical calculations without actually thinking about it, which seems preposterous, but if true, blows away scientific theory."
We really know so very little about what the brain is capable of.