12104003 ÷ 638 
The aim is to understand the frequency of 638 in 12104003.

Going ahead to step 1:
1 divided by 638 is 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 638

Step 2:
When dividing 12 by 638, we get 0 with a remainder of 12.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 12, we end up with 12.
Include the next digit (1) from the dividend after 12, then repeat: 121 / 638

Advancing to step 3:
When dividing 121 by 638, we get 0 with a remainder of 121.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 121 and we're left with 121.
Fetch the next digit (0) from the dividend, attach it to 121 and continue: 1210 / 638

Let's proceed to step 4:
The number 638 fits into 1210 1 times, leaving a remainder of 572.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 638 from 1210 and we're left with 572.
Include the next digit (4) from the dividend after 572, then repeat: 5724 / 638

Let's proceed to step 5:
If we divide 5724 by 638, we get 8 and a remainder of 620.
The next digit of our result is 8. 
Result so far: 18.0
Subtracting 5104 from 5724 leaves us with 620.
Include the next digit (0) from the dividend after 620, then repeat: 6200 / 638

Advancing to step 6:
638 can be fit into 6200 9 times, resulting in a remainder of 458.
Record the quotient 9 as the next digit in the result. 
Result so far: 189.0
Subtracting 5742 from 6200 leaves us with 458.
Bring next digit (0) of the dividend behind the 458 and repeat the process: 4580 / 638

Going ahead to step 7:
If we divide 4580 by 638, we get 7 and a remainder of 114.
Use 7 as the next digit of our solution. 
Result so far: 1897.0
If we subtract 4466 from 4580, we get 114.
Fetch the next digit (3) from the dividend, attach it to 114 and continue: 1143 / 638

Step 8:
638 goes into 1143 1 times with a remainder of 505.
Write down 1 as next digit of the result. 
Result so far: 18971.0
Deduct 638 from 1143 and we're left with 505.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5050, and continue the process.

Let's proceed to step 9:
638 can be fit into 5050 7 times, resulting in a remainder of 584.
Write down 7 as next digit of the result. 
Result so far: 18971.7
If we subtract 4466 from 5050, we get 584.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5840, and continue the process.

Going ahead to step 10:
638 goes into 5840 9 times with a remainder of 98.
Use 9 as the next digit of our solution. 
Result so far: 18971.79
Subtracting 5742 from 5840 leaves us with 98.
Since there are no more digits in the dividend, we add a zero to the remainder making it 980, and continue the process.

Going ahead to step 11:
The number 638 fits into 980 1 times, leaving a remainder of 342.
Write down 1 as next digit of the result. 
Result so far: 18971.791
The remainder is 342 after subtracting 638 from 980.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3420, and continue the process.

On to step 12:
638 can be fit into 3420 5 times, resulting in a remainder of 230.
Put 5 as the next digit of the answer. 
Result so far: 18971.7915
If we take 3190 away from 3420, we end up with 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Step 13:
2300 divided by 638 is 3 with a remainder of 386.
Write down 3 as next digit of the result. 
Result so far: 18971.79153
The remainder is 386 after subtracting 1914 from 2300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3860, and continue the process.

Let's proceed to step 14:
The number 638 fits into 3860 6 times, leaving a remainder of 32.
Record the quotient 6 as the next digit in the result. 
Result so far: 18971.791536
If we take 3828 away from 3860, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 15:
When dividing 320 by 638, we get 0 with a remainder of 320.
Write down 0 as next digit of the result. 
Result so far: 18971.791536
If we subtract 0 from 320, we get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Moving on to step 16:
3200 divided by 638 is 5 with a remainder of 10.
The next digit of our result is 5. 
Result so far: 18971.79153605
Subtract 3190 from 3200 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Our division results in 18971.79153605 with a remaining 1e-08.