We divide 13667842 by 644
We want to figure out the number of times 13667842 can be divided by 644.

Advancing to step 1:
644 can be fit into 1 0 times, resulting in a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Fetch the next digit (3) from the dividend, attach it to 1 and continue: 13 / 644

Moving on to step 2:
644 can be fit into 13 0 times, resulting in a remainder of 13.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 13, we end up with 13.
Include the next digit (6) from the dividend after 13, then repeat: 136 / 644

Step 3:
When dividing 136 by 644, we get 0 with a remainder of 136.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 136 to get 136.
Grab the next digit (6) from the dividend, add it to 136, then carry on: 1366 / 644

Going ahead to step 4:
When dividing 1366 by 644, we get 2 with a remainder of 78.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we take 1288 away from 1366, we end up with 78.
Grab the next digit (7) from the dividend, add it to 78, then carry on: 787 / 644

Step 5:
When dividing 787 by 644, we get 1 with a remainder of 143.
Use 1 as the next digit of our solution. 
Result so far: 21.0
If we subtract 644 from 787, we get 143.
Fetch the next digit (8) from the dividend, attach it to 143 and continue: 1438 / 644

On to step 6:
644 can be fit into 1438 2 times, resulting in a remainder of 150.
Record the quotient 2 as the next digit in the result. 
Result so far: 212.0
Deduct 1288 from 1438 and we're left with 150.
Fetch the next digit (4) from the dividend, attach it to 150 and continue: 1504 / 644

Step 7:
1504 divided by 644 is 2 with a remainder of 216.
Use 2 as the next digit of our solution. 
Result so far: 2122.0
Subtracting 1288 from 1504 leaves us with 216.
Include the next digit (2) from the dividend after 216, then repeat: 2162 / 644

Going ahead to step 8:
If we divide 2162 by 644, we get 3 and a remainder of 230.
Record the quotient 3 as the next digit in the result. 
Result so far: 21223.0
The remainder is 230 after subtracting 1932 from 2162.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Going ahead to step 9:
When dividing 2300 by 644, we get 3 with a remainder of 368.
Put 3 as the next digit of the answer. 
Result so far: 21223.3
Subtracting 1932 from 2300 leaves us with 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

On to step 10:
When dividing 3680 by 644, we get 5 with a remainder of 460.
Write down 5 as next digit of the result. 
Result so far: 21223.35
Subtracting 3220 from 3680 leaves us with 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

Advancing to step 11:
If we divide 4600 by 644, we get 7 and a remainder of 92.
Put 7 as the next digit of the answer. 
Result so far: 21223.357
Deduct 4508 from 4600 and we're left with 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Let's proceed to step 12:
When dividing 920 by 644, we get 1 with a remainder of 276.
Write down 1 as next digit of the result. 
Result so far: 21223.3571
The remainder is 276 after subtracting 644 from 920.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2760, and continue the process.

Going ahead to step 13:
If we divide 2760 by 644, we get 4 and a remainder of 184.
The next digit of our result is 4. 
Result so far: 21223.35714
Subtracting 2576 from 2760 leaves us with 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Let's proceed to step 14:
644 can be fit into 1840 2 times, resulting in a remainder of 552.
Write down 2 as next digit of the result. 
Result so far: 21223.357142
If we take 1288 away from 1840, we end up with 552.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5520, and continue the process.

Step 15:
644 can be fit into 5520 8 times, resulting in a remainder of 368.
Use 8 as the next digit of our solution. 
Result so far: 21223.3571428
The remainder is 368 after subtracting 5152 from 5520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

Advancing to step 16:
The number 644 fits into 3680 5 times, leaving a remainder of 460.
Write down 5 as next digit of the result. 
Result so far: 21223.35714285
If we take 3220 away from 3680, we end up with 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

In conclusion, the division gives 21223.35714285 with a balance of 4.6e-07.