Let's divide 18716621 by 803
The aim is to understand the frequency of 803 in 18716621.

On to step 1:
803 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Take the next digit (8) from the dividend and append it to 1, then repeat: 18 / 803

On to step 2:
803 goes into 18 0 times with a remainder of 18.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 18 leaves us with 18.
Take the next digit (7) from the dividend and append it to 18, then repeat: 187 / 803

Going ahead to step 3:
187 divided by 803 is 0 with a remainder of 187.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 187, we end up with 187.
Take the next digit (1) from the dividend and append it to 187, then repeat: 1871 / 803

Step 4:
If we divide 1871 by 803, we get 2 and a remainder of 265.
The next digit of our result is 2. 
Result so far: 2.0
The remainder is 265 after subtracting 1606 from 1871.
Grab the next digit (6) from the dividend, add it to 265, then carry on: 2656 / 803

Let's proceed to step 5:
2656 divided by 803 is 3 with a remainder of 247.
Use 3 as the next digit of our solution. 
Result so far: 23.0
If we take 2409 away from 2656, we end up with 247.
Take the next digit (6) from the dividend and append it to 247, then repeat: 2476 / 803

Moving on to step 6:
If we divide 2476 by 803, we get 3 and a remainder of 67.
Put 3 as the next digit of the answer. 
Result so far: 233.0
Subtracting 2409 from 2476 leaves us with 67.
Append the next digit (2) from the dividend to 67 and continue with: 672 / 803

On to step 7:
When dividing 672 by 803, we get 0 with a remainder of 672.
Use 0 as the next digit of our solution. 
Result so far: 2330.0
The remainder is 672 after subtracting 0 from 672.
Include the next digit (1) from the dividend after 672, then repeat: 6721 / 803

Step 8:
If we divide 6721 by 803, we get 8 and a remainder of 297.
Write down 8 as next digit of the result. 
Result so far: 23308.0
The remainder is 297 after subtracting 6424 from 6721.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2970, and continue the process.

Step 9:
The number 803 fits into 2970 3 times, leaving a remainder of 561.
Write down 3 as next digit of the result. 
Result so far: 23308.3
If we take 2409 away from 2970, we end up with 561.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5610, and continue the process.

Step 10:
5610 divided by 803 is 6 with a remainder of 792.
Use 6 as the next digit of our solution. 
Result so far: 23308.36
Deduct 4818 from 5610 and we're left with 792.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7920, and continue the process.

Moving on to step 11:
The number 803 fits into 7920 9 times, leaving a remainder of 693.
The next digit of our result is 9. 
Result so far: 23308.369
If we subtract 7227 from 7920, we get 693.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6930, and continue the process.

Going ahead to step 12:
When dividing 6930 by 803, we get 8 with a remainder of 506.
Put 8 as the next digit of the answer. 
Result so far: 23308.3698
Subtracting 6424 from 6930 leaves us with 506.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5060, and continue the process.

Moving on to step 13:
803 goes into 5060 6 times with a remainder of 242.
The next digit of our result is 6. 
Result so far: 23308.36986
If we subtract 4818 from 5060, we get 242.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2420, and continue the process.

Step 14:
When dividing 2420 by 803, we get 3 with a remainder of 11.
The next digit of our result is 3. 
Result so far: 23308.369863
If we subtract 2409 from 2420, we 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 15:
When dividing 110 by 803, we get 0 with a remainder of 110.
Record the quotient 0 as the next digit in the result. 
Result so far: 23308.369863
If we subtract 0 from 110, we get 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

On to step 16:
803 goes into 1100 1 times with a remainder of 297.
The number 1 becomes the next digit in our result. 
Result so far: 23308.36986301
If we take 803 away from 1100, we end up with 297.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2970, and continue the process.

The final outcome is 23308.36986301, with a leftover of 2.97e-07.