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Designed by Otto Steiger, a Swiss engineer, the moving carriage of the Millionaire has a 20 decimal digit accumulator that shows the product after multiplication and into which dividend is entered prior to division. The 10-digit multiplicand or divisor is entered on the sliders (or keyboard, on later models) above the carriage, while successive ...
Here, the partial dividend is 9. The first number to be divided by the divisor (4) is the partial dividend (9). One writes the integer part of the result (2) above the division bar over the leftmost digit of the dividend, and one writes the remainder (1) as a small digit above and to the right of the partial dividend (9).
Long division is the standard algorithm used for pen-and-paper division of multi-digit numbers expressed in decimal notation. It shifts gradually from the left to the right end of the dividend, subtracting the largest possible multiple of the divisor (at the digit level) at each stage; the multiples then become the digits of the quotient, and the final difference is then the remainder.
In the example, 20 is the dividend, 5 is the divisor, and 4 is the quotient. Unlike the other basic operations, when dividing natural numbers there is sometimes a remainder that will not go evenly into the dividend; for example, 10 / 3 leaves a remainder of 1, as 10 is not a multiple of 3.
It is divisible by 3 and by 7. [6] 231: it is divisible by 3 and by 7. 22: It is divisible by 2 and by 11. [6] 352: it is divisible by 2 and by 11. 23: Add 7 times the last digit to the rest. (Works because 69 is divisible by 23.) 3,128: 312 + 8 × 7 = 368: 36 + 8 × 7 = 92. Add 3 times the last two digits to the rest. (Works because 299 is ...
Decimal numbers are not divided directly, the dividend and divisor are multiplied by a power of ten so that the division involves two whole numbers. Therefore, if one were dividing 12,7 by 0,4 (commas being used instead of decimal points), the dividend and divisor would first be changed to 127 and 4, and then the division would proceed as above.