The widespread and persistent myth that it is easier to multiply and divide with Hindu-Arabic numerals than with Roman ones. - The Renaissance Mathematicus

https://thonyc.wordpress.com/2017/02/10/the-widespread-and-persistent-myth-that-it-is-easier-to-multiply-and-divide-with-hindu-arabic-numerals-than-with-roman-ones/
The widespread and persistent myth that it is easier to multiply and divide with Hindu-Arabic numerals than with Roman ones. - The Renaissance Mathematicus

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Spoiler: no it's not.