91331203 ÷ 236 
The aim is to understand the frequency of 236 in 91331203.

On to step 1:
236 can be fit into 9 0 times, resulting in a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Append the next digit (1) from the dividend to 9 and continue with: 91 / 236

Advancing to step 2:
91 divided by 236 is 0 with a remainder of 91.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 91 leaves us with 91.
Grab the next digit (3) from the dividend, add it to 91, then carry on: 913 / 236

Step 3:
236 can be fit into 913 3 times, resulting in a remainder of 205.
The next digit of our result is 3. 
Result so far: 3.0
If we take 708 away from 913, we end up with 205.
Include the next digit (3) from the dividend after 205, then repeat: 2053 / 236

Let's proceed to step 4:
236 can be fit into 2053 8 times, resulting in a remainder of 165.
The next digit of our result is 8. 
Result so far: 38.0
If we take 1888 away from 2053, we end up with 165.
Include the next digit (1) from the dividend after 165, then repeat: 1651 / 236

Advancing to step 5:
When dividing 1651 by 236, we get 6 with a remainder of 235.
Put 6 as the next digit of the answer. 
Result so far: 386.0
If we subtract 1416 from 1651, we get 235.
Fetch the next digit (2) from the dividend, attach it to 235 and continue: 2352 / 236

Advancing to step 6:
2352 divided by 236 is 9 with a remainder of 228.
Write down 9 as next digit of the result. 
Result so far: 3869.0
The remainder is 228 after subtracting 2124 from 2352.
Fetch the next digit (0) from the dividend, attach it to 228 and continue: 2280 / 236

On to step 7:
236 can be fit into 2280 9 times, resulting in a remainder of 156.
Put 9 as the next digit of the answer. 
Result so far: 38699.0
The remainder is 156 after subtracting 2124 from 2280.
Take the next digit (3) from the dividend and append it to 156, then repeat: 1563 / 236

Going ahead to step 8:
If we divide 1563 by 236, we get 6 and a remainder of 147.
The next digit of our result is 6. 
Result so far: 386996.0
Deduct 1416 from 1563 and we're left with 147.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1470, and continue the process.

Advancing to step 9:
The number 236 fits into 1470 6 times, leaving a remainder of 54.
The next digit of our result is 6. 
Result so far: 386996.6
If we take 1416 away from 1470, we end up with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Going ahead to step 10:
If we divide 540 by 236, we get 2 and a remainder of 68.
Put 2 as the next digit of the answer. 
Result so far: 386996.62
If we take 472 away from 540, we end up with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Going ahead to step 11:
When dividing 680 by 236, we get 2 with a remainder of 208.
The number 2 becomes the next digit in our result. 
Result so far: 386996.622
The remainder is 208 after subtracting 472 from 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

The final result is 386996.622 with a remainder of 0.0208.