13672592 ÷ 21 
We want to divide 13672592 by 21.

Going ahead to step 1:
When dividing 1 by 21, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 21

Advancing to step 2:
If we divide 13 by 21, we get 0 and a remainder of 13.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 13 leaves us with 13.
Append the next digit (6) from the dividend to 13 and continue with: 136 / 21

Let's proceed to step 3:
21 goes into 136 6 times with a remainder of 10.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Subtract 126 from 136 to get 10.
Include the next digit (7) from the dividend after 10, then repeat: 107 / 21

Moving on to step 4:
21 goes into 107 5 times with a remainder of 2.
Use 5 as the next digit of our solution. 
Result so far: 65.0
If we subtract 105 from 107, we get 2.
Include the next digit (2) from the dividend after 2, then repeat: 22 / 21

Let's proceed to step 5:
If we divide 22 by 21, we get 1 and a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 651.0
The remainder is 1 after subtracting 21 from 22.
Grab the next digit (5) from the dividend, add it to 1, then carry on: 15 / 21

Let's proceed to step 6:
When dividing 15 by 21, we get 0 with a remainder of 15.
Put 0 as the next digit of the answer. 
Result so far: 6510.0
Subtract 0 from 15 to get 15.
Take the next digit (9) from the dividend and append it to 15, then repeat: 159 / 21

Step 7:
When dividing 159 by 21, we get 7 with a remainder of 12.
Put 7 as the next digit of the answer. 
Result so far: 65107.0
The remainder is 12 after subtracting 147 from 159.
Include the next digit (2) from the dividend after 12, then repeat: 122 / 21

Advancing to step 8:
When dividing 122 by 21, we get 5 with a remainder of 17.
The number 5 becomes the next digit in our result. 
Result so far: 651075.0
If we take 105 away from 122, we end up 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.

Let's proceed to step 9:
21 can be fit into 170 8 times, resulting in a remainder of 2.
The number 8 becomes the next digit in our result. 
Result so far: 651075.8
The remainder is 2 after subtracting 168 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 10:
When dividing 20 by 21, we get 0 with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 651075.8
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 11:
The number 21 fits into 200 9 times, leaving a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 651075.809
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.

Let's proceed to step 12:
The number 21 fits into 110 5 times, leaving a remainder of 5.
The next digit of our result is 5. 
Result so far: 651075.8095
If we take 105 away from 110, we end up 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.

Advancing to step 13:
21 goes into 50 2 times with a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 651075.80952
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.

Going ahead to step 14:
80 divided by 21 is 3 with a remainder of 17.
The number 3 becomes the next digit in our result. 
Result so far: 651075.809523
Subtract 63 from 80 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Moving on to step 15:
If we divide 170 by 21, we get 8 and a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 651075.8095238
Deduct 168 from 170 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 16:
The number 21 fits into 20 0 times, leaving a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 651075.8095238
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The final result is 651075.8095238 with a remainder of 2e-08.