We're dividing 13926490 by 859 
The aim is to understand the frequency of 859 in 13926490.

Advancing to step 1:
1 divided by 859 is 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Include the next digit (3) from the dividend after 1, then repeat: 13 / 859

Going ahead to step 2:
13 divided by 859 is 0 with a remainder of 13.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 13, we end up with 13.
Grab the next digit (9) from the dividend, add it to 13, then carry on: 139 / 859

Moving on to step 3:
139 divided by 859 is 0 with a remainder of 139.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 139 and we're left with 139.
Include the next digit (2) from the dividend after 139, then repeat: 1392 / 859

Advancing to step 4:
859 can be fit into 1392 1 times, resulting in a remainder of 533.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 859 from 1392 to get 533.
Grab the next digit (6) from the dividend, add it to 533, then carry on: 5336 / 859

Step 5:
5336 divided by 859 is 6 with a remainder of 182.
Record the quotient 6 as the next digit in the result. 
Result so far: 16.0
If we take 5154 away from 5336, we end up with 182.
Append the next digit (4) from the dividend to 182 and continue with: 1824 / 859

On to step 6:
When dividing 1824 by 859, we get 2 with a remainder of 106.
Write down 2 as next digit of the result. 
Result so far: 162.0
Subtracting 1718 from 1824 leaves us with 106.
Fetch the next digit (9) from the dividend, attach it to 106 and continue: 1069 / 859

Let's proceed to step 7:
The number 859 fits into 1069 1 times, leaving a remainder of 210.
Write down 1 as next digit of the result. 
Result so far: 1621.0
The remainder is 210 after subtracting 859 from 1069.
Append the next digit (0) from the dividend to 210 and continue with: 2100 / 859

Step 8:
859 can be fit into 2100 2 times, resulting in a remainder of 382.
The next digit of our result is 2. 
Result so far: 16212.0
Subtract 1718 from 2100 to get 382.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3820, and continue the process.

Moving on to step 9:
When dividing 3820 by 859, we get 4 with a remainder of 384.
Write down 4 as next digit of the result. 
Result so far: 16212.4
Subtract 3436 from 3820 to get 384.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

Let's proceed to step 10:
If we divide 3840 by 859, we get 4 and a remainder of 404.
The next digit of our result is 4. 
Result so far: 16212.44
Subtract 3436 from 3840 to get 404.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4040, and continue the process.

The final result is 16212.44 with a remainder of 0.404.