We look at the division of 81375239 by 681 
The aim is to understand the frequency of 681 in 81375239.

Let's proceed to step 1:
681 can be fit into 8 0 times, resulting in a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (1) from the dividend, add it to 8, then carry on: 81 / 681

Let's proceed to step 2:
The number 681 fits into 81 0 times, leaving a remainder of 81.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 81 and we're left with 81.
Fetch the next digit (3) from the dividend, attach it to 81 and continue: 813 / 681

Let's proceed to step 3:
681 goes into 813 1 times with a remainder of 132.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 681 from 813 to get 132.
Take the next digit (7) from the dividend and append it to 132, then repeat: 1327 / 681

Moving on to step 4:
If we divide 1327 by 681, we get 1 and a remainder of 646.
Write down 1 as next digit of the result. 
Result so far: 11.0
Subtract 681 from 1327 to get 646.
Bring next digit (5) of the dividend behind the 646 and repeat the process: 6465 / 681

Advancing to step 5:
681 goes into 6465 9 times with a remainder of 336.
The next digit of our result is 9. 
Result so far: 119.0
If we subtract 6129 from 6465, we get 336.
Grab the next digit (2) from the dividend, add it to 336, then carry on: 3362 / 681

Step 6:
681 can be fit into 3362 4 times, resulting in a remainder of 638.
Use 4 as the next digit of our solution. 
Result so far: 1194.0
Subtract 2724 from 3362 to get 638.
Fetch the next digit (3) from the dividend, attach it to 638 and continue: 6383 / 681

Going ahead to step 7:
The number 681 fits into 6383 9 times, leaving a remainder of 254.
Put 9 as the next digit of the answer. 
Result so far: 11949.0
Deduct 6129 from 6383 and we're left with 254.
Grab the next digit (9) from the dividend, add it to 254, then carry on: 2549 / 681

Moving on to step 8:
The number 681 fits into 2549 3 times, leaving a remainder of 506.
Write down 3 as next digit of the result. 
Result so far: 119493.0
If we take 2043 away from 2549, we end up with 506.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5060, and continue the process.

On to step 9:
The number 681 fits into 5060 7 times, leaving a remainder of 293.
The next digit of our result is 7. 
Result so far: 119493.7
If we subtract 4767 from 5060, we get 293.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2930, and continue the process.

On to step 10:
2930 divided by 681 is 4 with a remainder of 206.
The number 4 becomes the next digit in our result. 
Result so far: 119493.74
Subtract 2724 from 2930 to get 206.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2060, and continue the process.

Step 11:
When dividing 2060 by 681, we get 3 with a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 119493.743
Deduct 2043 from 2060 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Moving on to step 12:
The number 681 fits into 170 0 times, leaving a remainder of 170.
Record the quotient 0 as the next digit in the result. 
Result so far: 119493.743
If we subtract 0 from 170, we get 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Let's proceed to step 13:
681 goes into 1700 2 times with a remainder of 338.
Use 2 as the next digit of our solution. 
Result so far: 119493.74302
The remainder is 338 after subtracting 1362 from 1700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3380, and continue the process.

On to step 14:
When dividing 3380 by 681, we get 4 with a remainder of 656.
The number 4 becomes the next digit in our result. 
Result so far: 119493.743024
Subtract 2724 from 3380 to get 656.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6560, and continue the process.

Step 15:
681 goes into 6560 9 times with a remainder of 431.
Record the quotient 9 as the next digit in the result. 
Result so far: 119493.7430249
The remainder is 431 after subtracting 6129 from 6560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4310, and continue the process.

Moving on to step 16:
681 can be fit into 4310 6 times, resulting in a remainder of 224.
The number 6 becomes the next digit in our result. 
Result so far: 119493.74302496
Deduct 4086 from 4310 and we're left with 224.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

The final result is 119493.74302496 with a remainder of 2.24e-07.