Long Division Step-by-Step

Long division written out the way it is taught, one step at a time.

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Long Division Step-by-Step

Digit by digit, as written in school

Dividend (number to divide)

Divisor (divide by)

523 ÷ 12 =43 r 7quotient 43, remainder 7

Written layout

How it works

Long division splits a big division into small ones. You work from the left: bring down a digit, see how many times the divisor fits, write that digit in the answer, multiply, subtract, and repeat.

Divide 523 by 12, working from the left one digit at a time.
Start with 52. 12 goes into 52 4 times: 4 × 12 = 48. Subtract: 52 − 48 = 4.
Bring down 3 → 43. 12 goes into 43 3 times: 3 × 12 = 36. Subtract: 43 − 36 = 7.
Nothing left to bring down. Answer: 43 remainder 7. Check: 12 × 43 + 7 = 523.

For a decimal divisor like 0.25, multiply both numbers by 10, 100… until the divisor is whole.
If the same remainder appears again, the digits repeat for ever.
Check a remainder answer: divisor × quotient + remainder = dividend.

Exact whole-number (BigInt) arithmetic, one digit at a time. Decimal answers bring down zeros; a repeated remainder marks the start of the recurring digits.

Preparing tool

How to use Long Division Step-by-Step

Type the number to divide (dividend) and the number to divide by (divisor).
Choose an answer with a remainder, or a decimal answer and how many places.
Follow the layout and the written steps, then copy them or share a link.

Read the detailed guide →

What are the limits of Long Division Step-by-Step?

Up to 15 digits in each number and 6 decimal places in the inputs; decimal answers stop after at most 20 places unless the digits start repeating. Nothing you enter leaves your device.