We're dividing 18728735 by 437 
The aim is to understand the frequency of 437 in 18728735.

Let's proceed to step 1:
If we divide 1 by 437, we get 0 and a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Bring next digit (8) of the dividend behind the 1 and repeat the process: 18 / 437

Going ahead to step 2:
437 can be fit into 18 0 times, resulting in a remainder of 18.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 18 and we're left with 18.
Include the next digit (7) from the dividend after 18, then repeat: 187 / 437

Let's proceed to step 3:
437 can be fit into 187 0 times, resulting in a remainder of 187.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 187, we get 187.
Grab the next digit (2) from the dividend, add it to 187, then carry on: 1872 / 437

Advancing to step 4:
The number 437 fits into 1872 4 times, leaving a remainder of 124.
Use 4 as the next digit of our solution. 
Result so far: 4.0
The remainder is 124 after subtracting 1748 from 1872.
Include the next digit (8) from the dividend after 124, then repeat: 1248 / 437

Step 5:
1248 divided by 437 is 2 with a remainder of 374.
Write down 2 as next digit of the result. 
Result so far: 42.0
If we subtract 874 from 1248, we get 374.
Grab the next digit (7) from the dividend, add it to 374, then carry on: 3747 / 437

Advancing to step 6:
When dividing 3747 by 437, we get 8 with a remainder of 251.
Put 8 as the next digit of the answer. 
Result so far: 428.0
The remainder is 251 after subtracting 3496 from 3747.
Fetch the next digit (3) from the dividend, attach it to 251 and continue: 2513 / 437

Let's proceed to step 7:
If we divide 2513 by 437, we get 5 and a remainder of 328.
Put 5 as the next digit of the answer. 
Result so far: 4285.0
Subtract 2185 from 2513 to get 328.
Include the next digit (5) from the dividend after 328, then repeat: 3285 / 437

On to step 8:
When dividing 3285 by 437, we get 7 with a remainder of 226.
Use 7 as the next digit of our solution. 
Result so far: 42857.0
If we subtract 3059 from 3285, we get 226.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

On to step 9:
The number 437 fits into 2260 5 times, leaving a remainder of 75.
Use 5 as the next digit of our solution. 
Result so far: 42857.5
The remainder is 75 after subtracting 2185 from 2260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

On to step 10:
If we divide 750 by 437, we get 1 and a remainder of 313.
The next digit of our result is 1. 
Result so far: 42857.51
The remainder is 313 after subtracting 437 from 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3130, and continue the process.

Advancing to step 11:
437 goes into 3130 7 times with a remainder of 71.
Record the quotient 7 as the next digit in the result. 
Result so far: 42857.517
If we subtract 3059 from 3130, we get 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Step 12:
437 goes into 710 1 times with a remainder of 273.
Write down 1 as next digit of the result. 
Result so far: 42857.5171
Subtracting 437 from 710 leaves us with 273.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2730, and continue the process.

Moving on to step 13:
437 can be fit into 2730 6 times, resulting in a remainder of 108.
Use 6 as the next digit of our solution. 
Result so far: 42857.51716
Subtract 2622 from 2730 to get 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

On to step 14:
When dividing 1080 by 437, we get 2 with a remainder of 206.
Record the quotient 2 as the next digit in the result. 
Result so far: 42857.517162
The remainder is 206 after subtracting 874 from 1080.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2060, and continue the process.

Going ahead to step 15:
The number 437 fits into 2060 4 times, leaving a remainder of 312.
Write down 4 as next digit of the result. 
Result so far: 42857.5171624
Subtracting 1748 from 2060 leaves us with 312.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3120, and continue the process.

Step 16:
437 goes into 3120 7 times with a remainder of 61.
Use 7 as the next digit of our solution. 
Result so far: 42857.51716247
The remainder is 61 after subtracting 3059 from 3120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

After the division, we end up with 42857.51716247 and a remainder of 6.1e-08.