437100 ÷ 28 
The aim is to understand the frequency of 28 in 437100.

Let's proceed to step 1:
28 goes into 4 0 times with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Append the next digit (3) from the dividend to 4 and continue with: 43 / 28

Moving on to step 2:
43 divided by 28 is 1 with a remainder of 15.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 28 from 43, we get 15.
Bring next digit (7) of the dividend behind the 15 and repeat the process: 157 / 28

Moving on to step 3:
If we divide 157 by 28, we get 5 and a remainder of 17.
Record the quotient 5 as the next digit in the result. 
Result so far: 15.0
Deduct 140 from 157 and we're left with 17.
Grab the next digit (1) from the dividend, add it to 17, then carry on: 171 / 28

Moving on to step 4:
28 can be fit into 171 6 times, resulting in a remainder of 3.
The number 6 becomes the next digit in our result. 
Result so far: 156.0
Subtract 168 from 171 to get 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 28

On to step 5:
If we divide 30 by 28, we get 1 and a remainder of 2.
Write down 1 as next digit of the result. 
Result so far: 1561.0
If we take 28 away from 30, we end up with 2.
Include the next digit (0) from the dividend after 2, then repeat: 20 / 28

Advancing to step 6:
When dividing 20 by 28, we get 0 with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 15610.0
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 7:
28 can be fit into 200 7 times, resulting in a remainder of 4.
Put 7 as the next digit of the answer. 
Result so far: 15610.7
If we take 196 away from 200, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 8:
40 divided by 28 is 1 with a remainder of 12.
Use 1 as the next digit of our solution. 
Result so far: 15610.71
Subtract 28 from 40 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 9:
The number 28 fits into 120 4 times, leaving a remainder of 8.
The next digit of our result is 4. 
Result so far: 15610.714
If we take 112 away from 120, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 10:
80 divided by 28 is 2 with a remainder of 24.
The next digit of our result is 2. 
Result so far: 15610.7142
Deduct 56 from 80 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 11:
240 divided by 28 is 8 with a remainder of 16.
Record the quotient 8 as the next digit in the result. 
Result so far: 15610.71428
If we take 224 away from 240, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 12:
The number 28 fits into 160 5 times, leaving a remainder of 20.
Record the quotient 5 as the next digit in the result. 
Result so far: 15610.714285
The remainder is 20 after subtracting 140 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 13:
28 can be fit into 200 7 times, resulting in a remainder of 4.
Put 7 as the next digit of the answer. 
Result so far: 15610.7142857
Deduct 196 from 200 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 14:
28 can be fit into 40 1 times, resulting in a remainder of 12.
The number 1 becomes the next digit in our result. 
Result so far: 15610.71428571
If we subtract 28 from 40, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final outcome is 15610.71428571, with a leftover of 1.2e-08.