We look at the division of 210922 by 43 
The aim is to understand the frequency of 43 in 210922.

On to step 1:
The number 43 fits into 2 0 times, leaving a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 43

On to step 2:
When dividing 21 by 43, we get 0 with a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Grab the next digit (0) from the dividend, add it to 21, then carry on: 210 / 43

Advancing to step 3:
When dividing 210 by 43, we get 4 with a remainder of 38.
The next digit of our result is 4. 
Result so far: 4.0
If we subtract 172 from 210, we get 38.
Grab the next digit (9) from the dividend, add it to 38, then carry on: 389 / 43

On to step 4:
43 goes into 389 9 times with a remainder of 2.
The number 9 becomes the next digit in our result. 
Result so far: 49.0
If we subtract 387 from 389, we get 2.
Grab the next digit (2) from the dividend, add it to 2, then carry on: 22 / 43

On to step 5:
If we divide 22 by 43, we get 0 and a remainder of 22.
Use 0 as the next digit of our solution. 
Result so far: 490.0
If we take 0 away from 22, we end up with 22.
Take the next digit (2) from the dividend and append it to 22, then repeat: 222 / 43

On to step 6:
If we divide 222 by 43, we get 5 and a remainder of 7.
Put 5 as the next digit of the answer. 
Result so far: 4905.0
If we subtract 215 from 222, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 7:
43 can be fit into 70 1 times, resulting in a remainder of 27.
The next digit of our result is 1. 
Result so far: 4905.1
Deduct 43 from 70 and we're left with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Going ahead to step 8:
If we divide 270 by 43, we get 6 and a remainder of 12.
The next digit of our result is 6. 
Result so far: 4905.16
The remainder is 12 after subtracting 258 from 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 9:
120 divided by 43 is 2 with a remainder of 34.
Write down 2 as next digit of the result. 
Result so far: 4905.162
If we subtract 86 from 120, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Step 10:
When dividing 340 by 43, we get 7 with a remainder of 39.
Write down 7 as next digit of the result. 
Result so far: 4905.1627
If we take 301 away from 340, we end up with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Step 11:
If we divide 390 by 43, we get 9 and a remainder of 3.
Write down 9 as next digit of the result. 
Result so far: 4905.16279
If we subtract 387 from 390, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 12:
If we divide 30 by 43, we get 0 and a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 4905.16279
Subtract 0 from 30 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 13:
43 can be fit into 300 6 times, resulting in a remainder of 42.
Write down 6 as next digit of the result. 
Result so far: 4905.1627906
Deduct 258 from 300 and we're left with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

On to step 14:
If we divide 420 by 43, we get 9 and a remainder of 33.
Record the quotient 9 as the next digit in the result. 
Result so far: 4905.16279069
If we take 387 away from 420, we end up with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

The final outcome is 4905.16279069, with a leftover of 3.3e-08.