We look at the division of 17280971 by 236 
The aim is to understand the frequency of 236 in 17280971.

Advancing to step 1:
236 can be fit into 1 0 times, resulting in a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Bring next digit (7) of the dividend behind the 1 and repeat the process: 17 / 236

On to step 2:
When dividing 17 by 236, we get 0 with a remainder of 17.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 17 after subtracting 0 from 17.
Take the next digit (2) from the dividend and append it to 17, then repeat: 172 / 236

Step 3:
The number 236 fits into 172 0 times, leaving a remainder of 172.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 172, we get 172.
Fetch the next digit (8) from the dividend, attach it to 172 and continue: 1728 / 236

Advancing to step 4:
236 goes into 1728 7 times with a remainder of 76.
The next digit of our result is 7. 
Result so far: 7.0
If we take 1652 away from 1728, we end up with 76.
Fetch the next digit (0) from the dividend, attach it to 76 and continue: 760 / 236

Step 5:
236 can be fit into 760 3 times, resulting in a remainder of 52.
The next digit of our result is 3. 
Result so far: 73.0
If we take 708 away from 760, we end up with 52.
Grab the next digit (9) from the dividend, add it to 52, then carry on: 529 / 236

Let's proceed to step 6:
When dividing 529 by 236, we get 2 with a remainder of 57.
Write down 2 as next digit of the result. 
Result so far: 732.0
Subtracting 472 from 529 leaves us with 57.
Append the next digit (7) from the dividend to 57 and continue with: 577 / 236

Moving on to step 7:
When dividing 577 by 236, we get 2 with a remainder of 105.
Use 2 as the next digit of our solution. 
Result so far: 7322.0
If we take 472 away from 577, we end up with 105.
Bring next digit (1) of the dividend behind the 105 and repeat the process: 1051 / 236

Let's proceed to step 8:
236 can be fit into 1051 4 times, resulting in a remainder of 107.
The number 4 becomes the next digit in our result. 
Result so far: 73224.0
Subtracting 944 from 1051 leaves us with 107.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1070, and continue the process.

On to step 9:
If we divide 1070 by 236, we get 4 and a remainder of 126.
Record the quotient 4 as the next digit in the result. 
Result so far: 73224.4
Deduct 944 from 1070 and we're left with 126.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1260, and continue the process.

Advancing to step 10:
236 can be fit into 1260 5 times, resulting in a remainder of 80.
Write down 5 as next digit of the result. 
Result so far: 73224.45
The remainder is 80 after subtracting 1180 from 1260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 11:
When dividing 800 by 236, we get 3 with a remainder of 92.
Write down 3 as next digit of the result. 
Result so far: 73224.453
If we subtract 708 from 800, we get 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Let's proceed to step 12:
When dividing 920 by 236, we get 3 with a remainder of 212.
The number 3 becomes the next digit in our result. 
Result so far: 73224.4533
Subtract 708 from 920 to get 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

The quotient of the division is 73224.4533, and the remainder is 0.00212.