We divide 723197 by 21
We want to divide 723197 by 21.

Going ahead to step 1:
When dividing 7 by 21, we get 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 21

Moving on to step 2:
When dividing 72 by 21, we get 3 with a remainder of 9.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtract 63 from 72 to get 9.
Fetch the next digit (3) from the dividend, attach it to 9 and continue: 93 / 21

On to step 3:
If we divide 93 by 21, we get 4 and a remainder of 9.
Put 4 as the next digit of the answer. 
Result so far: 34.0
Subtracting 84 from 93 leaves us with 9.
Grab the next digit (1) from the dividend, add it to 9, then carry on: 91 / 21

Advancing to step 4:
If we divide 91 by 21, we get 4 and a remainder of 7.
The number 4 becomes the next digit in our result. 
Result so far: 344.0
Subtracting 84 from 91 leaves us with 7.
Bring next digit (9) of the dividend behind the 7 and repeat the process: 79 / 21

Going ahead to step 5:
If we divide 79 by 21, we get 3 and a remainder of 16.
The next digit of our result is 3. 
Result so far: 3443.0
If we take 63 away from 79, we end up with 16.
Include the next digit (7) from the dividend after 16, then repeat: 167 / 21

On to step 6:
21 can be fit into 167 7 times, resulting in a remainder of 20.
Write down 7 as next digit of the result. 
Result so far: 34437.0
Subtract 147 from 167 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 7:
21 can be fit into 200 9 times, resulting in a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 34437.9
Subtract 189 from 200 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 8:
110 divided by 21 is 5 with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 34437.95
Subtracting 105 from 110 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 9:
21 goes into 50 2 times with a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 34437.952
If we take 42 away from 50, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 10:
The number 21 fits into 80 3 times, leaving a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 34437.9523
Deduct 63 from 80 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 11:
If we divide 170 by 21, we get 8 and a remainder of 2.
The next digit of our result is 8. 
Result so far: 34437.95238
If we subtract 168 from 170, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 12:
The number 21 fits into 20 0 times, leaving a remainder of 20.
The next digit of our result is 0. 
Result so far: 34437.95238
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 13:
The number 21 fits into 200 9 times, leaving a remainder of 11.
The next digit of our result is 9. 
Result so far: 34437.9523809
If we take 189 away from 200, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 14:
21 goes into 110 5 times with a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 34437.95238095
Subtracting 105 from 110 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

After the division, we end up with 34437.95238095 and a remainder of 5e-09.