Tool to make an euclidean division automatically. Euclidean division is an arithmetical operation which associates to two numbers: the dividend and the divisor, two others numbers resulting from the division operation : the quotient and the remainder.

Euclidean Division - dCode

Tag(s) : Arithmetics

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Tool to make an euclidean division automatically. Euclidean division is an arithmetical operation which associates to two numbers: the dividend and the divisor, two others numbers resulting from the division operation : the quotient and the remainder.

Rest is the result of $$ r = a - q \times b $$

Example: In the division \( 43/21 \), the quotient equals \( 2 \) and the remainder equals \( 43 - 21 \times 2 = 1 \), indeed \( 43 = 2 \times 21 + 1 \).

To get a positive remainder, subtract \( 1 \) to the quotient and add it to the negative remainder.

Example: If \( a = 15, b = 4 \), then is is possible to use \( q = 4, r = -1 \) (negative) because \( b \times q + r = 4 \times 4 - 1 = 15 = a \).

Example: The other case stays valid, by taking \( q = ( 4 - 1 ) = 3 \) and then have \( r = 3 \) (positive) and \( b \times q + r = 4 \times 3 + 3 = 15 = a \)

An Euclidean division is an entire division, it is not supposed to have decimal places.

However, if the divisor or the dividend has decimal places, it is possible to multiply by 10 as many times as necessary to make it disappear.

Example: 1.2/3 is equivalent to having 12/30

The name comes from Euclid, a mathematician.

This software is not limited, it can calculated with any number, including big numbers with arbitrary precision

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Source : https://www.dcode.fr/euclidean-division

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