31226135 divided by 861 
The aim is to understand the frequency of 861 in 31226135.

Advancing to step 1:
When dividing 3 by 861, we get 0 with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Include the next digit (1) from the dividend after 3, then repeat: 31 / 861

Step 2:
When dividing 31 by 861, we get 0 with a remainder of 31.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 31 after subtracting 0 from 31.
Take the next digit (2) from the dividend and append it to 31, then repeat: 312 / 861

On to step 3:
When dividing 312 by 861, we get 0 with a remainder of 312.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 312, we end up with 312.
Fetch the next digit (2) from the dividend, attach it to 312 and continue: 3122 / 861

Going ahead to step 4:
861 can be fit into 3122 3 times, resulting in a remainder of 539.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we take 2583 away from 3122, we end up with 539.
Bring next digit (6) of the dividend behind the 539 and repeat the process: 5396 / 861

Let's proceed to step 5:
861 can be fit into 5396 6 times, resulting in a remainder of 230.
Write down 6 as next digit of the result. 
Result so far: 36.0
Deduct 5166 from 5396 and we're left with 230.
Include the next digit (1) from the dividend after 230, then repeat: 2301 / 861

Moving on to step 6:
861 can be fit into 2301 2 times, resulting in a remainder of 579.
Put 2 as the next digit of the answer. 
Result so far: 362.0
Subtract 1722 from 2301 to get 579.
Bring next digit (3) of the dividend behind the 579 and repeat the process: 5793 / 861

On to step 7:
861 goes into 5793 6 times with a remainder of 627.
Put 6 as the next digit of the answer. 
Result so far: 3626.0
The remainder is 627 after subtracting 5166 from 5793.
Fetch the next digit (5) from the dividend, attach it to 627 and continue: 6275 / 861

Let's proceed to step 8:
The number 861 fits into 6275 7 times, leaving a remainder of 248.
Use 7 as the next digit of our solution. 
Result so far: 36267.0
If we subtract 6027 from 6275, we get 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Moving on to step 9:
The number 861 fits into 2480 2 times, leaving a remainder of 758.
The next digit of our result is 2. 
Result so far: 36267.2
If we take 1722 away from 2480, we end up with 758.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7580, and continue the process.

On to step 10:
861 goes into 7580 8 times with a remainder of 692.
Record the quotient 8 as the next digit in the result. 
Result so far: 36267.28
If we take 6888 away from 7580, we end up with 692.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6920, and continue the process.

Advancing to step 11:
If we divide 6920 by 861, we get 8 and a remainder of 32.
Put 8 as the next digit of the answer. 
Result so far: 36267.288
If we subtract 6888 from 6920, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

After the division, we end up with 36267.288 and a remainder of 0.0032.