We're dividing 41686644 by 839 
The aim is to understand the frequency of 839 in 41686644.

Step 1:
If we divide 4 by 839, we get 0 and a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Append the next digit (1) from the dividend to 4 and continue with: 41 / 839

Step 2:
When dividing 41 by 839, we get 0 with a remainder of 41.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 41 to get 41.
Bring next digit (6) of the dividend behind the 41 and repeat the process: 416 / 839

Going ahead to step 3:
416 divided by 839 is 0 with a remainder of 416.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 416 and we're left with 416.
Include the next digit (8) from the dividend after 416, then repeat: 4168 / 839

Step 4:
When dividing 4168 by 839, we get 4 with a remainder of 812.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we subtract 3356 from 4168, we get 812.
Bring next digit (6) of the dividend behind the 812 and repeat the process: 8126 / 839

Going ahead to step 5:
The number 839 fits into 8126 9 times, leaving a remainder of 575.
Put 9 as the next digit of the answer. 
Result so far: 49.0
The remainder is 575 after subtracting 7551 from 8126.
Grab the next digit (6) from the dividend, add it to 575, then carry on: 5756 / 839

Advancing to step 6:
839 can be fit into 5756 6 times, resulting in a remainder of 722.
Use 6 as the next digit of our solution. 
Result so far: 496.0
If we take 5034 away from 5756, we end up with 722.
Bring next digit (4) of the dividend behind the 722 and repeat the process: 7224 / 839

Moving on to step 7:
The number 839 fits into 7224 8 times, leaving a remainder of 512.
Use 8 as the next digit of our solution. 
Result so far: 4968.0
Deduct 6712 from 7224 and we're left with 512.
Take the next digit (4) from the dividend and append it to 512, then repeat: 5124 / 839

Going ahead to step 8:
When dividing 5124 by 839, we get 6 with a remainder of 90.
The next digit of our result is 6. 
Result so far: 49686.0
If we subtract 5034 from 5124, we get 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Going ahead to step 9:
839 can be fit into 900 1 times, resulting in a remainder of 61.
Use 1 as the next digit of our solution. 
Result so far: 49686.1
If we subtract 839 from 900, we 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.

Let's proceed to step 10:
839 goes into 610 0 times with a remainder of 610.
The number 0 becomes the next digit in our result. 
Result so far: 49686.1
Subtract 0 from 610 to get 610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6100, and continue the process.

Let's proceed to step 11:
If we divide 6100 by 839, we get 7 and a remainder of 227.
The next digit of our result is 7. 
Result so far: 49686.107
Subtracting 5873 from 6100 leaves us with 227.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2270, and continue the process.

Step 12:
When dividing 2270 by 839, we get 2 with a remainder of 592.
Put 2 as the next digit of the answer. 
Result so far: 49686.1072
If we take 1678 away from 2270, we end up with 592.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5920, and continue the process.

Let's proceed to step 13:
839 goes into 5920 7 times with a remainder of 47.
Write down 7 as next digit of the result. 
Result so far: 49686.10727
If we subtract 5873 from 5920, we get 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Let's proceed to step 14:
470 divided by 839 is 0 with a remainder of 470.
The number 0 becomes the next digit in our result. 
Result so far: 49686.10727
Subtracting 0 from 470 leaves us with 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4700, and continue the process.

Advancing to step 15:
839 goes into 4700 5 times with a remainder of 505.
The number 5 becomes the next digit in our result. 
Result so far: 49686.1072705
Subtracting 4195 from 4700 leaves us with 505.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5050, and continue the process.

Advancing to step 16:
5050 divided by 839 is 6 with a remainder of 16.
Write down 6 as next digit of the result. 
Result so far: 49686.10727056
The remainder is 16 after subtracting 5034 from 5050.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

The final result is 49686.10727056 with a remainder of 1.6e-08.