3690426 ÷ 43 
The aim is to understand the frequency of 43 in 3690426.

Moving on to step 1:
When dividing 3 by 43, we get 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Grab the next digit (6) from the dividend, add it to 3, then carry on: 36 / 43

Going ahead to step 2:
The number 43 fits into 36 0 times, leaving a remainder of 36.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 36, we get 36.
Grab the next digit (9) from the dividend, add it to 36, then carry on: 369 / 43

Moving on to step 3:
If we divide 369 by 43, we get 8 and a remainder of 25.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
If we subtract 344 from 369, we get 25.
Fetch the next digit (0) from the dividend, attach it to 25 and continue: 250 / 43

Going ahead to step 4:
43 goes into 250 5 times with a remainder of 35.
Use 5 as the next digit of our solution. 
Result so far: 85.0
Subtracting 215 from 250 leaves us with 35.
Bring next digit (4) of the dividend behind the 35 and repeat the process: 354 / 43

On to step 5:
43 can be fit into 354 8 times, resulting in a remainder of 10.
Use 8 as the next digit of our solution. 
Result so far: 858.0
Subtracting 344 from 354 leaves us with 10.
Bring next digit (2) of the dividend behind the 10 and repeat the process: 102 / 43

Going ahead to step 6:
The number 43 fits into 102 2 times, leaving a remainder of 16.
Put 2 as the next digit of the answer. 
Result so far: 8582.0
If we subtract 86 from 102, we get 16.
Include the next digit (6) from the dividend after 16, then repeat: 166 / 43

On to step 7:
166 divided by 43 is 3 with a remainder of 37.
The number 3 becomes the next digit in our result. 
Result so far: 85823.0
The remainder is 37 after subtracting 129 from 166.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Going ahead to step 8:
The number 43 fits into 370 8 times, leaving a remainder of 26.
Put 8 as the next digit of the answer. 
Result so far: 85823.8
Deduct 344 from 370 and we're left 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.

Moving on to step 9:
When dividing 260 by 43, we get 6 with a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 85823.86
If we take 258 away from 260, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 10:
When dividing 20 by 43, we get 0 with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 85823.86
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.

Going ahead to step 11:
The number 43 fits into 200 4 times, leaving a remainder of 28.
The next digit of our result is 4. 
Result so far: 85823.8604
Subtracting 172 from 200 leaves us 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.

Let's proceed to step 12:
280 divided by 43 is 6 with a remainder of 22.
Put 6 as the next digit of the answer. 
Result so far: 85823.86046
If we take 258 away from 280, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 13:
When dividing 220 by 43, we get 5 with a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 85823.860465
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.

Moving on to step 14:
When dividing 50 by 43, we get 1 with a remainder of 7.
The number 1 becomes the next digit in our result. 
Result so far: 85823.8604651
Deduct 43 from 50 and we're left 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 15:
The number 43 fits into 70 1 times, leaving a remainder of 27.
Record the quotient 1 as the next digit in the result. 
Result so far: 85823.86046511
The remainder is 27 after subtracting 43 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Our division results in 85823.86046511 with a remaining 2.7e-08.