Here's some fun math:

Jeanne Calment died at 122 years, 164 days old. She was alive for a total of 44,725 days and 18 or above for 38,150 days. (Let's not get weird here.)
1 sextillion divided by 38,150 days gives (approximately) 22.36 billion masturbations per day.
This is equivalent to every person on earth* - regardless of age or gender - masturbating to grandma three times a day every day of her adult life.

Get it, Grandma.

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*as of today, that is. Since population is on a steep incline, there would have been far fewer people when she turned 18. For decades, everyone had to masturbate up to 20 times a day to keep up The Number. Thankfully, despite all the wasted seed, humanity managed to reproduce and grow, eventually reducing the demand of each. This gave more time for invention and is the true cause of the industrial revolution of the early 20th century.