537698 ÷ 43 
The aim is to understand the frequency of 43 in 537698.

On to step 1:
43 goes into 5 0 times with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Include the next digit (3) from the dividend after 5, then repeat: 53 / 43

Advancing to step 2:
If we divide 53 by 43, we get 1 and a remainder of 10.
The next digit of our result is 1. 
Result so far: 1.0
If we take 43 away from 53, we end up with 10.
Include the next digit (7) from the dividend after 10, then repeat: 107 / 43

Step 3:
43 goes into 107 2 times with a remainder of 21.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
Subtract 86 from 107 to get 21.
Take the next digit (6) from the dividend and append it to 21, then repeat: 216 / 43

Advancing to step 4:
216 divided by 43 is 5 with a remainder of 1.
Put 5 as the next digit of the answer. 
Result so far: 125.0
Subtracting 215 from 216 leaves us with 1.
Grab the next digit (9) from the dividend, add it to 1, then carry on: 19 / 43

Going ahead to step 5:
If we divide 19 by 43, we get 0 and a remainder of 19.
Record the quotient 0 as the next digit in the result. 
Result so far: 1250.0
If we take 0 away from 19, we end up with 19.
Fetch the next digit (8) from the dividend, attach it to 19 and continue: 198 / 43

Moving on to step 6:
198 divided by 43 is 4 with a remainder of 26.
Write down 4 as next digit of the result. 
Result so far: 12504.0
Subtracting 172 from 198 leaves us with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Advancing to step 7:
43 goes into 260 6 times with a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 12504.6
Subtract 258 from 260 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 8:
When dividing 20 by 43, we get 0 with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 12504.6
Subtracting 0 from 20 leaves us 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.

Going ahead to step 9:
When dividing 200 by 43, we get 4 with a remainder of 28.
Put 4 as the next digit of the answer. 
Result so far: 12504.604
If we take 172 away from 200, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 10:
The number 43 fits into 280 6 times, leaving a remainder of 22.
Record the quotient 6 as the next digit in the result. 
Result so far: 12504.6046
The remainder is 22 after subtracting 258 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 11:
When dividing 220 by 43, we get 5 with a remainder of 5.
The next digit of our result is 5. 
Result so far: 12504.60465
If we subtract 215 from 220, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 12:
When dividing 50 by 43, we get 1 with a remainder of 7.
Write down 1 as next digit of the result. 
Result so far: 12504.604651
If we take 43 away from 50, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Let's proceed to step 13:
43 goes into 70 1 times with a remainder of 27.
Record the quotient 1 as the next digit in the result. 
Result so far: 12504.6046511
If we subtract 43 from 70, we get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

After the division, we end up with 12504.6046511 and a remainder of 2.7e-07.