01
How to use this calculator
- Divide the leading part of the dividend by the divisor.
- Multiply, subtract and bring down the next digit.
- Repeat until the digits are exhausted or the required precision is reached.
02
A little understanding goes a long way.
Long division turns a large division into a sequence of smaller operations. For nonnegative integer inputs, the remainder is at least zero and less than the divisor.
THE FORMULA
Dividend = divisor × quotient + remainder
TRY IT ON PAPER
A worked example
157 ÷ 12 = 13 remainder 1 because 12 × 13 + 1 = 157. As a decimal, the quotient is 13.08333…
03
A few common questions
Can the divisor be zero?
No. Division by zero is undefined.
Does a remainder mean the division is wrong?
No. It represents the amount left after taking all complete groups of the divisor.