We look at the division of 85246121 by 957 
The aim is to understand the frequency of 957 in 85246121.

Step 1:
957 goes into 8 0 times with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Take the next digit (5) from the dividend and append it to 8, then repeat: 85 / 957

Going ahead to step 2:
The number 957 fits into 85 0 times, leaving a remainder of 85.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 85 and we're left with 85.
Include the next digit (2) from the dividend after 85, then repeat: 852 / 957

Advancing to step 3:
The number 957 fits into 852 0 times, leaving a remainder of 852.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 852 to get 852.
Fetch the next digit (4) from the dividend, attach it to 852 and continue: 8524 / 957

Going ahead to step 4:
If we divide 8524 by 957, we get 8 and a remainder of 868.
The next digit of our result is 8. 
Result so far: 8.0
If we subtract 7656 from 8524, we get 868.
Bring next digit (6) of the dividend behind the 868 and repeat the process: 8686 / 957

Advancing to step 5:
The number 957 fits into 8686 9 times, leaving a remainder of 73.
Put 9 as the next digit of the answer. 
Result so far: 89.0
Subtract 8613 from 8686 to get 73.
Append the next digit (1) from the dividend to 73 and continue with: 731 / 957

Advancing to step 6:
731 divided by 957 is 0 with a remainder of 731.
Record the quotient 0 as the next digit in the result. 
Result so far: 890.0
The remainder is 731 after subtracting 0 from 731.
Bring next digit (2) of the dividend behind the 731 and repeat the process: 7312 / 957

Step 7:
957 can be fit into 7312 7 times, resulting in a remainder of 613.
Put 7 as the next digit of the answer. 
Result so far: 8907.0
Subtracting 6699 from 7312 leaves us with 613.
Grab the next digit (1) from the dividend, add it to 613, then carry on: 6131 / 957

Advancing to step 8:
957 goes into 6131 6 times with a remainder of 389.
Write down 6 as next digit of the result. 
Result so far: 89076.0
The remainder is 389 after subtracting 5742 from 6131.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3890, and continue the process.

On to step 9:
3890 divided by 957 is 4 with a remainder of 62.
Put 4 as the next digit of the answer. 
Result so far: 89076.4
Deduct 3828 from 3890 and we're left with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

On to step 10:
The number 957 fits into 620 0 times, leaving a remainder of 620.
Use 0 as the next digit of our solution. 
Result so far: 89076.4
Subtracting 0 from 620 leaves us with 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6200, and continue the process.

Step 11:
When dividing 6200 by 957, we get 6 with a remainder of 458.
Put 6 as the next digit of the answer. 
Result so far: 89076.406
The remainder is 458 after subtracting 5742 from 6200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4580, and continue the process.

On to step 12:
When dividing 4580 by 957, we get 4 with a remainder of 752.
The next digit of our result is 4. 
Result so far: 89076.4064
The remainder is 752 after subtracting 3828 from 4580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7520, and continue the process.

On to step 13:
957 can be fit into 7520 7 times, resulting in a remainder of 821.
Use 7 as the next digit of our solution. 
Result so far: 89076.40647
If we take 6699 away from 7520, we end up with 821.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8210, and continue the process.

Let's proceed to step 14:
8210 divided by 957 is 8 with a remainder of 554.
The next digit of our result is 8. 
Result so far: 89076.406478
Subtract 7656 from 8210 to get 554.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5540, and continue the process.

Step 15:
If we divide 5540 by 957, we get 5 and a remainder of 755.
Put 5 as the next digit of the answer. 
Result so far: 89076.4064785
If we take 4785 away from 5540, we end up with 755.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7550, and continue the process.

On to step 16:
When dividing 7550 by 957, we get 7 with a remainder of 851.
The next digit of our result is 7. 
Result so far: 89076.40647857
Subtracting 6699 from 7550 leaves us with 851.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8510, and continue the process.

The final outcome is 89076.40647857, with a leftover of 8.51e-07.