Math · FREE ONLINE TOOL

Long Division Calculator

Divide integers to find a quotient and remainder, or inspect digit-by-digit long-division steps for supported inputs.

Your inputs

Calculations run in your browser. No account needed.

EXAMPLE RESULTCalculated locally
Quotient
17
Remainder
6
Decimal
17.86
Clear inputs. Transparent methods.
My workspace

Calculate with your inputs to save a result or compare scenarios.

How it works

A useful distinction

The remainder decides how to round

Packing 125 items into boxes holding 7 gives 17 full boxes with 6 items left. You need 18 boxes to hold everything, but only 17 complete boxes are filled; the practical question determines which count matters.

Interpreting a quotient and remainder

Integer division separates the result into a whole-number quotient and a remainder, while decimal division expresses the same relationship as a decimal value where supported. Keep the dividend and divisor in the correct order. A useful check is to multiply the divisor by the quotient and add the remainder. The step-by-step mode is intended to make that division process easier to follow.

Long division: formula and assumptions

Dividend = divisor × quotient + remainder.

The remainder is nonnegative and smaller than the positive divisor.

Integer division steps: formula and assumptions

For each digit: partial=10×remainder+next digit; quotient digit=floor(partial/divisor).

The breakdown shows multiplication, subtraction, and each resulting remainder. Supports integers up to 300 digits.

Worked example

Using the Long division example:

Inputs
Dividend
125
Divisor
7
Method

Dividend = divisor × quotient + remainder.

Result

Example result

Quotient: 17

Remainder: 6

Decimal: 17.86

These are illustrative inputs. Change the values to explore a different scenario.

Formula references

References explain the underlying methods; they do not imply endorsement or individual professional review of Finflo.

Common questions

How can I check a quotient and remainder?

Multiply the divisor by the quotient and add the remainder. The result should equal the original dividend.

What does the steps mode show?

It shows each partial dividend, quotient digit, multiplication and subtraction, followed by the resulting remainder.

Prepared by Finflo. See our methodology and editorial policy.