Let's divide 18703857 by 331
The aim is to understand the frequency of 331 in 18703857.

Advancing to step 1:
331 can be fit into 1 0 times, resulting in a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 331

Advancing to step 2:
When dividing 18 by 331, we get 0 with a remainder of 18.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 18, we get 18.
Grab the next digit (7) from the dividend, add it to 18, then carry on: 187 / 331

Moving on to step 3:
331 goes into 187 0 times with a remainder of 187.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 187 to get 187.
Include the next digit (0) from the dividend after 187, then repeat: 1870 / 331

Moving on to step 4:
331 goes into 1870 5 times with a remainder of 215.
Put 5 as the next digit of the answer. 
Result so far: 5.0
If we take 1655 away from 1870, we end up with 215.
Append the next digit (3) from the dividend to 215 and continue with: 2153 / 331

Going ahead to step 5:
2153 divided by 331 is 6 with a remainder of 167.
Write down 6 as next digit of the result. 
Result so far: 56.0
Subtracting 1986 from 2153 leaves us with 167.
Fetch the next digit (8) from the dividend, attach it to 167 and continue: 1678 / 331

Let's proceed to step 6:
If we divide 1678 by 331, we get 5 and a remainder of 23.
Record the quotient 5 as the next digit in the result. 
Result so far: 565.0
If we subtract 1655 from 1678, we get 23.
Fetch the next digit (5) from the dividend, attach it to 23 and continue: 235 / 331

On to step 7:
The number 331 fits into 235 0 times, leaving a remainder of 235.
Write down 0 as next digit of the result. 
Result so far: 5650.0
Deduct 0 from 235 and we're left with 235.
Fetch the next digit (7) from the dividend, attach it to 235 and continue: 2357 / 331

Advancing to step 8:
The number 331 fits into 2357 7 times, leaving a remainder of 40.
Write down 7 as next digit of the result. 
Result so far: 56507.0
If we subtract 2317 from 2357, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 9:
When dividing 400 by 331, we get 1 with a remainder of 69.
Write down 1 as next digit of the result. 
Result so far: 56507.1
Subtract 331 from 400 to get 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Advancing to step 10:
331 goes into 690 2 times with a remainder of 28.
Write down 2 as next digit of the result. 
Result so far: 56507.12
Subtract 662 from 690 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 11:
331 can be fit into 280 0 times, resulting in a remainder of 280.
Write down 0 as next digit of the result. 
Result so far: 56507.12
If we take 0 away from 280, we end up with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

On to step 12:
331 can be fit into 2800 8 times, resulting in a remainder of 152.
Record the quotient 8 as the next digit in the result. 
Result so far: 56507.1208
The remainder is 152 after subtracting 2648 from 2800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

Moving on to step 13:
331 goes into 1520 4 times with a remainder of 196.
The number 4 becomes the next digit in our result. 
Result so far: 56507.12084
Subtracting 1324 from 1520 leaves us with 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

Step 14:
331 can be fit into 1960 5 times, resulting in a remainder of 305.
The number 5 becomes the next digit in our result. 
Result so far: 56507.120845
If we subtract 1655 from 1960, we get 305.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3050, and continue the process.

On to step 15:
331 goes into 3050 9 times with a remainder of 71.
Write down 9 as next digit of the result. 
Result so far: 56507.1208459
The remainder is 71 after subtracting 2979 from 3050.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

On to step 16:
331 goes into 710 2 times with a remainder of 48.
Write down 2 as next digit of the result. 
Result so far: 56507.12084592
Deduct 662 from 710 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

The final outcome is 56507.12084592, with a leftover of 4.8e-08.