We look at the division of 72105597 by 206 
The aim is to understand the frequency of 206 in 72105597.

Step 1:
If we divide 7 by 206, we get 0 and a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Fetch the next digit (2) from the dividend, attach it to 7 and continue: 72 / 206

Advancing to step 2:
72 divided by 206 is 0 with a remainder of 72.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 72 leaves us with 72.
Append the next digit (1) from the dividend to 72 and continue with: 721 / 206

On to step 3:
206 can be fit into 721 3 times, resulting in a remainder of 103.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we take 618 away from 721, we end up with 103.
Append the next digit (0) from the dividend to 103 and continue with: 1030 / 206

Advancing to step 4:
If we divide 1030 by 206, we get 5 and a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 35.0
If we take 1030 away from 1030, we end up with 0.
Grab the next digit (5) from the dividend, add it to 0, then carry on: 5 / 206

Step 5:
The number 206 fits into 5 0 times, leaving a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 350.0
If we take 0 away from 5, we end up with 5.
Grab the next digit (5) from the dividend, add it to 5, then carry on: 55 / 206

Advancing to step 6:
If we divide 55 by 206, we get 0 and a remainder of 55.
Write down 0 as next digit of the result. 
Result so far: 3500.0
If we subtract 0 from 55, we get 55.
Fetch the next digit (9) from the dividend, attach it to 55 and continue: 559 / 206

Going ahead to step 7:
The number 206 fits into 559 2 times, leaving a remainder of 147.
Put 2 as the next digit of the answer. 
Result so far: 35002.0
Deduct 412 from 559 and we're left with 147.
Grab the next digit (7) from the dividend, add it to 147, then carry on: 1477 / 206

Step 8:
1477 divided by 206 is 7 with a remainder of 35.
The next digit of our result is 7. 
Result so far: 350027.0
Subtract 1442 from 1477 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Moving on to step 9:
206 goes into 350 1 times with a remainder of 144.
The next digit of our result is 1. 
Result so far: 350027.1
If we subtract 206 from 350, we get 144.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

On to step 10:
206 goes into 1440 6 times with a remainder of 204.
Record the quotient 6 as the next digit in the result. 
Result so far: 350027.16
Subtracting 1236 from 1440 leaves us with 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

Advancing to step 11:
206 can be fit into 2040 9 times, resulting in a remainder of 186.
Put 9 as the next digit of the answer. 
Result so far: 350027.169
Subtract 1854 from 2040 to get 186.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1860, and continue the process.

Step 12:
The number 206 fits into 1860 9 times, leaving a remainder of 6.
Put 9 as the next digit of the answer. 
Result so far: 350027.1699
If we subtract 1854 from 1860, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

The final result is 350027.1699 with a remainder of 6e-05.