We're dividing 40875512 by 861 
The aim is to understand the frequency of 861 in 40875512.

Advancing to step 1:
When dividing 4 by 861, we get 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Grab the next digit (0) from the dividend, add it to 4, then carry on: 40 / 861

Going ahead to step 2:
The number 861 fits into 40 0 times, leaving a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 40 and we're left with 40.
Grab the next digit (8) from the dividend, add it to 40, then carry on: 408 / 861

Step 3:
When dividing 408 by 861, we get 0 with a remainder of 408.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 408, we end up with 408.
Bring next digit (7) of the dividend behind the 408 and repeat the process: 4087 / 861

Let's proceed to step 4:
4087 divided by 861 is 4 with a remainder of 643.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Deduct 3444 from 4087 and we're left with 643.
Include the next digit (5) from the dividend after 643, then repeat: 6435 / 861

On to step 5:
If we divide 6435 by 861, we get 7 and a remainder of 408.
Write down 7 as next digit of the result. 
Result so far: 47.0
Deduct 6027 from 6435 and we're left with 408.
Append the next digit (5) from the dividend to 408 and continue with: 4085 / 861

Moving on to step 6:
4085 divided by 861 is 4 with a remainder of 641.
The next digit of our result is 4. 
Result so far: 474.0
Deduct 3444 from 4085 and we're left with 641.
Bring next digit (1) of the dividend behind the 641 and repeat the process: 6411 / 861

Let's proceed to step 7:
861 goes into 6411 7 times with a remainder of 384.
Write down 7 as next digit of the result. 
Result so far: 4747.0
Subtracting 6027 from 6411 leaves us with 384.
Bring next digit (2) of the dividend behind the 384 and repeat the process: 3842 / 861

Let's proceed to step 8:
861 goes into 3842 4 times with a remainder of 398.
Write down 4 as next digit of the result. 
Result so far: 47474.0
If we subtract 3444 from 3842, we get 398.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3980, and continue the process.

Advancing to step 9:
3980 divided by 861 is 4 with a remainder of 536.
Write down 4 as next digit of the result. 
Result so far: 47474.4
If we take 3444 away from 3980, we end up with 536.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5360, and continue the process.

Moving on to step 10:
The number 861 fits into 5360 6 times, leaving a remainder of 194.
Write down 6 as next digit of the result. 
Result so far: 47474.46
Subtract 5166 from 5360 to get 194.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1940, and continue the process.

Step 11:
861 can be fit into 1940 2 times, resulting in a remainder of 218.
Record the quotient 2 as the next digit in the result. 
Result so far: 47474.462
The remainder is 218 after subtracting 1722 from 1940.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2180, and continue the process.

Let's proceed to step 12:
If we divide 2180 by 861, we get 2 and a remainder of 458.
Record the quotient 2 as the next digit in the result. 
Result so far: 47474.4622
If we subtract 1722 from 2180, we get 458.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4580, and continue the process.

Our division results in 47474.4622 with a remaining 0.00458.