We're dividing 12186148 by 859 
The aim is to understand the frequency of 859 in 12186148.

Moving on to step 1:
859 can be fit into 1 0 times, resulting in a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 859

Moving on to step 2:
When dividing 12 by 859, we get 0 with a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Include the next digit (1) from the dividend after 12, then repeat: 121 / 859

Going ahead to step 3:
If we divide 121 by 859, we get 0 and a remainder of 121.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 121 and we're left with 121.
Fetch the next digit (8) from the dividend, attach it to 121 and continue: 1218 / 859

Moving on to step 4:
If we divide 1218 by 859, we get 1 and a remainder of 359.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 859 from 1218 leaves us with 359.
Grab the next digit (6) from the dividend, add it to 359, then carry on: 3596 / 859

Going ahead to step 5:
The number 859 fits into 3596 4 times, leaving a remainder of 160.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
If we take 3436 away from 3596, we end up with 160.
Grab the next digit (1) from the dividend, add it to 160, then carry on: 1601 / 859

On to step 6:
1601 divided by 859 is 1 with a remainder of 742.
Write down 1 as next digit of the result. 
Result so far: 141.0
Deduct 859 from 1601 and we're left with 742.
Append the next digit (4) from the dividend to 742 and continue with: 7424 / 859

Moving on to step 7:
The number 859 fits into 7424 8 times, leaving a remainder of 552.
Record the quotient 8 as the next digit in the result. 
Result so far: 1418.0
The remainder is 552 after subtracting 6872 from 7424.
Append the next digit (8) from the dividend to 552 and continue with: 5528 / 859

Advancing to step 8:
The number 859 fits into 5528 6 times, leaving a remainder of 374.
Put 6 as the next digit of the answer. 
Result so far: 14186.0
Subtract 5154 from 5528 to get 374.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3740, and continue the process.

On to step 9:
The number 859 fits into 3740 4 times, leaving a remainder of 304.
The number 4 becomes the next digit in our result. 
Result so far: 14186.4
The remainder is 304 after subtracting 3436 from 3740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3040, and continue the process.

Advancing to step 10:
When dividing 3040 by 859, we get 3 with a remainder of 463.
The number 3 becomes the next digit in our result. 
Result so far: 14186.43
Subtracting 2577 from 3040 leaves us with 463.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4630, and continue the process.

Moving on to step 11:
859 can be fit into 4630 5 times, resulting in a remainder of 335.
Record the quotient 5 as the next digit in the result. 
Result so far: 14186.435
The remainder is 335 after subtracting 4295 from 4630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3350, and continue the process.

Let's proceed to step 12:
The number 859 fits into 3350 3 times, leaving a remainder of 773.
Use 3 as the next digit of our solution. 
Result so far: 14186.4353
If we take 2577 away from 3350, we end up with 773.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7730, and continue the process.

Step 13:
If we divide 7730 by 859, we get 8 and a remainder of 858.
Record the quotient 8 as the next digit in the result. 
Result so far: 14186.43538
Subtracting 6872 from 7730 leaves us with 858.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8580, and continue the process.

Moving on to step 14:
859 goes into 8580 9 times with a remainder of 849.
Put 9 as the next digit of the answer. 
Result so far: 14186.435389
If we subtract 7731 from 8580, we get 849.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8490, and continue the process.

Moving on to step 15:
8490 divided by 859 is 9 with a remainder of 759.
Put 9 as the next digit of the answer. 
Result so far: 14186.4353899
The remainder is 759 after subtracting 7731 from 8490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7590, and continue the process.

The final result is 14186.4353899 with a remainder of 7.59e-06.