We look at the division of 91542913 by 681 
The aim is to understand the frequency of 681 in 91542913.

Step 1:
681 can be fit into 9 0 times, resulting in a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Bring next digit (1) of the dividend behind the 9 and repeat the process: 91 / 681

Going ahead to step 2:
If we divide 91 by 681, we get 0 and a remainder of 91.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 91 after subtracting 0 from 91.
Include the next digit (5) from the dividend after 91, then repeat: 915 / 681

Going ahead to step 3:
915 divided by 681 is 1 with a remainder of 234.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 681 from 915 and we're left with 234.
Append the next digit (4) from the dividend to 234 and continue with: 2344 / 681

Advancing to step 4:
681 can be fit into 2344 3 times, resulting in a remainder of 301.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
If we take 2043 away from 2344, we end up with 301.
Fetch the next digit (2) from the dividend, attach it to 301 and continue: 3012 / 681

Let's proceed to step 5:
681 goes into 3012 4 times with a remainder of 288.
The next digit of our result is 4. 
Result so far: 134.0
If we subtract 2724 from 3012, we get 288.
Fetch the next digit (9) from the dividend, attach it to 288 and continue: 2889 / 681

Going ahead to step 6:
The number 681 fits into 2889 4 times, leaving a remainder of 165.
Put 4 as the next digit of the answer. 
Result so far: 1344.0
Subtract 2724 from 2889 to get 165.
Bring next digit (1) of the dividend behind the 165 and repeat the process: 1651 / 681

Advancing to step 7:
If we divide 1651 by 681, we get 2 and a remainder of 289.
Use 2 as the next digit of our solution. 
Result so far: 13442.0
If we subtract 1362 from 1651, we get 289.
Include the next digit (3) from the dividend after 289, then repeat: 2893 / 681

Moving on to step 8:
The number 681 fits into 2893 4 times, leaving a remainder of 169.
The number 4 becomes the next digit in our result. 
Result so far: 134424.0
If we take 2724 away from 2893, we end up with 169.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1690, and continue the process.

Step 9:
1690 divided by 681 is 2 with a remainder of 328.
Record the quotient 2 as the next digit in the result. 
Result so far: 134424.2
The remainder is 328 after subtracting 1362 from 1690.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3280, and continue the process.

Moving on to step 10:
When dividing 3280 by 681, we get 4 with a remainder of 556.
Write down 4 as next digit of the result. 
Result so far: 134424.24
The remainder is 556 after subtracting 2724 from 3280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5560, and continue the process.

Going ahead to step 11:
If we divide 5560 by 681, we get 8 and a remainder of 112.
The number 8 becomes the next digit in our result. 
Result so far: 134424.248
Subtracting 5448 from 5560 leaves us with 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Moving on to step 12:
If we divide 1120 by 681, we get 1 and a remainder of 439.
Put 1 as the next digit of the answer. 
Result so far: 134424.2481
If we subtract 681 from 1120, we get 439.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4390, and continue the process.

On to step 13:
If we divide 4390 by 681, we get 6 and a remainder of 304.
The number 6 becomes the next digit in our result. 
Result so far: 134424.24816
If we subtract 4086 from 4390, we get 304.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3040, and continue the process.

Let's proceed to step 14:
When dividing 3040 by 681, we get 4 with a remainder of 316.
Write down 4 as next digit of the result. 
Result so far: 134424.248164
The remainder is 316 after subtracting 2724 from 3040.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

On to step 15:
If we divide 3160 by 681, we get 4 and a remainder of 436.
The number 4 becomes the next digit in our result. 
Result so far: 134424.2481644
Subtract 2724 from 3160 to get 436.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4360, and continue the process.

Our division results in 134424.2481644 with a remaining 4.36e-06.