We're dividing 11873128 by 861 
The aim is to understand the frequency of 861 in 11873128.

Step 1:
If we divide 1 by 861, we get 0 and a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Fetch the next digit (1) from the dividend, attach it to 1 and continue: 11 / 861

Going ahead to step 2:
When dividing 11 by 861, we get 0 with a remainder of 11.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 11 after subtracting 0 from 11.
Grab the next digit (8) from the dividend, add it to 11, then carry on: 118 / 861

Going ahead to step 3:
861 goes into 118 0 times with a remainder of 118.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 118 after subtracting 0 from 118.
Bring next digit (7) of the dividend behind the 118 and repeat the process: 1187 / 861

Step 4:
The number 861 fits into 1187 1 times, leaving a remainder of 326.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 861 from 1187 and we're left with 326.
Include the next digit (3) from the dividend after 326, then repeat: 3263 / 861

Advancing to step 5:
If we divide 3263 by 861, we get 3 and a remainder of 680.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
If we take 2583 away from 3263, we end up with 680.
Include the next digit (1) from the dividend after 680, then repeat: 6801 / 861

Going ahead to step 6:
6801 divided by 861 is 7 with a remainder of 774.
Write down 7 as next digit of the result. 
Result so far: 137.0
The remainder is 774 after subtracting 6027 from 6801.
Grab the next digit (2) from the dividend, add it to 774, then carry on: 7742 / 861

Moving on to step 7:
7742 divided by 861 is 8 with a remainder of 854.
Write down 8 as next digit of the result. 
Result so far: 1378.0
Deduct 6888 from 7742 and we're left with 854.
Bring next digit (8) of the dividend behind the 854 and repeat the process: 8548 / 861

Step 8:
861 goes into 8548 9 times with a remainder of 799.
Record the quotient 9 as the next digit in the result. 
Result so far: 13789.0
Subtract 7749 from 8548 to get 799.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7990, and continue the process.

On to step 9:
861 goes into 7990 9 times with a remainder of 241.
The next digit of our result is 9. 
Result so far: 13789.9
The remainder is 241 after subtracting 7749 from 7990.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2410, and continue the process.

Advancing to step 10:
The number 861 fits into 2410 2 times, leaving a remainder of 688.
Write down 2 as next digit of the result. 
Result so far: 13789.92
Deduct 1722 from 2410 and we're left with 688.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6880, and continue the process.

On to step 11:
When dividing 6880 by 861, we get 7 with a remainder of 853.
Use 7 as the next digit of our solution. 
Result so far: 13789.927
Subtract 6027 from 6880 to get 853.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8530, and continue the process.

Going ahead to step 12:
8530 divided by 861 is 9 with a remainder of 781.
Record the quotient 9 as the next digit in the result. 
Result so far: 13789.9279
Subtract 7749 from 8530 to get 781.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7810, and continue the process.

Advancing to step 13:
861 can be fit into 7810 9 times, resulting in a remainder of 61.
Record the quotient 9 as the next digit in the result. 
Result so far: 13789.92799
Subtract 7749 from 7810 to get 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

After the division, we end up with 13789.92799 and a remainder of 6.1e-05.