We divide 66891413 by 839
The aim is to understand the frequency of 839 in 66891413.

Let's proceed to step 1:
If we divide 6 by 839, we get 0 and a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 839

Advancing to step 2:
The number 839 fits into 66 0 times, leaving a remainder of 66.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 66, we end up with 66.
Grab the next digit (8) from the dividend, add it to 66, then carry on: 668 / 839

Moving on to step 3:
If we divide 668 by 839, we get 0 and a remainder of 668.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 668 to get 668.
Fetch the next digit (9) from the dividend, attach it to 668 and continue: 6689 / 839

Going ahead to step 4:
839 goes into 6689 7 times with a remainder of 816.
The next digit of our result is 7. 
Result so far: 7.0
If we subtract 5873 from 6689, we get 816.
Grab the next digit (1) from the dividend, add it to 816, then carry on: 8161 / 839

Step 5:
When dividing 8161 by 839, we get 9 with a remainder of 610.
Record the quotient 9 as the next digit in the result. 
Result so far: 79.0
Subtract 7551 from 8161 to get 610.
Bring next digit (4) of the dividend behind the 610 and repeat the process: 6104 / 839

Advancing to step 6:
839 goes into 6104 7 times with a remainder of 231.
Use 7 as the next digit of our solution. 
Result so far: 797.0
Subtracting 5873 from 6104 leaves us with 231.
Take the next digit (1) from the dividend and append it to 231, then repeat: 2311 / 839

Let's proceed to step 7:
The number 839 fits into 2311 2 times, leaving a remainder of 633.
The number 2 becomes the next digit in our result. 
Result so far: 7972.0
If we subtract 1678 from 2311, we get 633.
Grab the next digit (3) from the dividend, add it to 633, then carry on: 6333 / 839

Going ahead to step 8:
If we divide 6333 by 839, we get 7 and a remainder of 460.
Use 7 as the next digit of our solution. 
Result so far: 79727.0
If we subtract 5873 from 6333, we get 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

Step 9:
839 goes into 4600 5 times with a remainder of 405.
Write down 5 as next digit of the result. 
Result so far: 79727.5
Subtract 4195 from 4600 to get 405.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4050, and continue the process.

On to step 10:
When dividing 4050 by 839, we get 4 with a remainder of 694.
Put 4 as the next digit of the answer. 
Result so far: 79727.54
Subtract 3356 from 4050 to get 694.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6940, and continue the process.

Going ahead to step 11:
839 goes into 6940 8 times with a remainder of 228.
The number 8 becomes the next digit in our result. 
Result so far: 79727.548
The remainder is 228 after subtracting 6712 from 6940.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

Advancing to step 12:
When dividing 2280 by 839, we get 2 with a remainder of 602.
Use 2 as the next digit of our solution. 
Result so far: 79727.5482
Deduct 1678 from 2280 and we're left with 602.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6020, and continue the process.

On to step 13:
When dividing 6020 by 839, we get 7 with a remainder of 147.
Write down 7 as next digit of the result. 
Result so far: 79727.54827
Deduct 5873 from 6020 and we're left with 147.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1470, and continue the process.

Moving on to step 14:
1470 divided by 839 is 1 with a remainder of 631.
Write down 1 as next digit of the result. 
Result so far: 79727.548271
If we take 839 away from 1470, we end up with 631.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6310, and continue the process.

Let's proceed to step 15:
The number 839 fits into 6310 7 times, leaving a remainder of 437.
Record the quotient 7 as the next digit in the result. 
Result so far: 79727.5482717
If we take 5873 away from 6310, we end up with 437.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4370, and continue the process.

Step 16:
If we divide 4370 by 839, we get 5 and a remainder of 175.
Record the quotient 5 as the next digit in the result. 
Result so far: 79727.54827175
Subtracting 4195 from 4370 leaves us with 175.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1750, and continue the process.

The final result is 79727.54827175 with a remainder of 1.75e-07.