Numbers Guy: Showman, scholar, savant…cashier?

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For some people, numbers are just that, numbers. But for others, there is a deeper story hidden within the numbers. That is the case for David Teitel, a cashier working in a health store in Toronto. He lives with a mental illness for more than 40 years, waiting to be accepted to clinical trial.

He lives alone in a messy apartment, and works as a cashier since 1980s. He enjoys sharing facts about history, sports statistics, and much more with his customers. And they all know him for his numbers knowledge.

#	Preview	Product	Price
1		Secrets of Mental Math: The Mathemagician's Guide to Lightning Calculation and Amazing Math Tricks	$12.42	Buy on Amazon
2		Mental Math for Real Life: A 15-Minute-a-Day System for Adults to Calculate Faster, Think Sharper,...	$19.99	Buy on Amazon
3		The Ultimate Mental Math Workbook for Adults: Daily Exercise for Your Brilliant Brain	$9.99	Buy on Amazon
4		Mental Math: Tricks To Become A Human Calculator (For Speed Math, Math Tricks, Vedic Math...	$14.49	Buy on Amazon
5		Mind over Math: Quick Thinking for Middle Grades: A Fun and Interactive Workbook for Mastering...	$12.00	Buy on Amazon

His story has been part of the documentary “The Numbers Guy”, filmed several years ago. He started his career in customer service after dropping out of school and struggling with mental illness. He also suffers from hepatitis C.

For David, there is magic in numbers, the sort of magic most people cannot and do not see. He tells the numbers and stats to anyone who listens.

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Secrets of Mental Math: The Mathemagician's Guide to Lightning Calculation and Amazing Math Tricks

• This product will be an excellent pick for you.
• It ensures you get the best usage for a longer period
• It ensures you get the best usage for a longer period

$12.42

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“The very first time that I correlated a customer’s total to a fact just came out of my mouth: 3.43, Don Mattingly’s batting average for the 1984 Yankees … I was just relying on the facts that were already in my head”.

His parents first noticed his talent when he was just four years old.

Quick Recap

SaleBestseller No. 1

Secrets of Mental Math: The Mathemagician's Guide to Lightning Calculation and Amazing Math Tricks

This product will be an excellent pick for you.; It ensures you get the best usage for a longer period

$12.42

Bestseller No. 2

Mental Math for Real Life: A 15-Minute-a-Day System for Adults to Calculate Faster, Think Sharper, and Never Feel Bad at Numbers Again

$19.99

Bestseller No. 3

The Ultimate Mental Math Workbook for Adults: Daily Exercise for Your Brilliant Brain

$9.99

Bestseller No. 4

Mental Math: Tricks To Become A Human Calculator (For Speed Math, Math Tricks, Vedic Math Enthusiasts, Gmat, Gre, SAT Students & Case Interview Study)

$14.49

Bestseller No. 5

Mind over Math: Quick Thinking for Middle Grades: A Fun and Interactive Workbook for Mastering Mental Math Strategies in Middle School

$12.00

Also popular on Amazon

Mind over Math: Quick Thinking for Middle Grades: A Fun and Interactive Workbook for Mastering Mental Math Strategies in Middle School

$12.00

Buy on Amazon

Also popular on Amazon

Mental Math: Tricks To Become A Human Calculator (For Speed Math, Math Tricks, Vedic Math Enthusiasts, Gmat, Gre, SAT Students & Case Interview Study)

$14.49

Buy on Amazon

Also popular on Amazon

The Ultimate Mental Math Workbook for Adults: Daily Exercise for Your Brilliant Brain

$9.99

Buy on Amazon

Also popular on Amazon

Mental Math for Real Life: A 15-Minute-a-Day System for Adults to Calculate Faster, Think Sharper, and Never Feel Bad at Numbers Again

$19.99

Buy on Amazon

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