111,111,111 x 111,111,111 = 12345678987654321 - Hand Calculation

First published at 18:35 UTC on March 9th, 2023.
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In this video I do a hand calculation of a neat little pattern which is quite remarkable in that if you have 111,111,111 multiplied by itself you get the pattern 1 to 9 and then all the way back to 1.

Download the notes in my video: https://1drv.ms…

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CategoryEducation
SensitivityNormal - Content that is suitable for ages 16 and over
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