Long Division: 21 ÷ 18

Long Division Calculator

How to divide 21 by 18 using long division and find the remainder?

Answer

21 ÷ 18 = 1 remainder 3

= 1.16 ≈ 1.17

Remainder 3 is less than the divisor 18. Check: 1 × 18 + 3 = 21.

21 ÷ 18 in a column

				1
1	8		2	1
		−	1	8
				3

Step by step: 21 ÷ 18

Step 121 ÷ 18 → 1: 1 × 18 = 18, 21 − 18 = 3
Quotient and remainder1 remainder 3

After the point, add a zero to the remainder: 30 ÷ 18 → 1, remainder 12; 120 ÷ 18 → 6, remainder 12; remainder 12 again — the digits repeat.

21 ÷ 18 = 1.16 ≈ 1.17

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Least Common Multiple - Find the Least Common Multiple (LCM) of two numbers
Percentage Calculator: Fraction to Percent - What percentage one number is of another? Convert fraction into a percentage

Recalculate with different values ↑

Long Division Table

Division	Quotient	Remainder
12 ÷ 18	0	12
13 ÷ 18	0	13
14 ÷ 18	0	14
15 ÷ 18	0	15
18 ÷ 18	1	0
19 ÷ 18	1	1
20 ÷ 18	1	2
21 ÷ 18	1	3
36 ÷ 18	2	0
38 ÷ 18	2	2
39 ÷ 18	2	3
42 ÷ 18	2	6
44 ÷ 18	2	8
45 ÷ 18	2	9
49 ÷ 18	2	13

FAQ

How to divide 21 by 18 using long division and find the remainder?

21 ÷ 18 = 1 remainder 3

Is 21 divisible by 18?

No, 21 is not divisible by 18. The remainder is 3.

How to check the result of 21 ÷ 18?

Multiply the quotient 1 by the divisor 18 and add the remainder 3. The result should equal 21.

See Also