8742987 divided by 925 
The aim is to understand the frequency of 925 in 8742987.

On to step 1:
8 divided by 925 is 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Grab the next digit (7) from the dividend, add it to 8, then carry on: 87 / 925

Advancing to step 2:
When dividing 87 by 925, we get 0 with a remainder of 87.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 87, we get 87.
Append the next digit (4) from the dividend to 87 and continue with: 874 / 925

Going ahead to step 3:
If we divide 874 by 925, we get 0 and a remainder of 874.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 874 after subtracting 0 from 874.
Append the next digit (2) from the dividend to 874 and continue with: 8742 / 925

Moving on to step 4:
925 can be fit into 8742 9 times, resulting in a remainder of 417.
Use 9 as the next digit of our solution. 
Result so far: 9.0
Subtracting 8325 from 8742 leaves us with 417.
Append the next digit (9) from the dividend to 417 and continue with: 4179 / 925

Moving on to step 5:
925 goes into 4179 4 times with a remainder of 479.
Put 4 as the next digit of the answer. 
Result so far: 94.0
Deduct 3700 from 4179 and we're left with 479.
Grab the next digit (8) from the dividend, add it to 479, then carry on: 4798 / 925

On to step 6:
925 goes into 4798 5 times with a remainder of 173.
Use 5 as the next digit of our solution. 
Result so far: 945.0
If we subtract 4625 from 4798, we get 173.
Take the next digit (7) from the dividend and append it to 173, then repeat: 1737 / 925

Going ahead to step 7:
1737 divided by 925 is 1 with a remainder of 812.
The number 1 becomes the next digit in our result. 
Result so far: 9451.0
Subtract 925 from 1737 to get 812.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8120, and continue the process.

On to step 8:
925 can be fit into 8120 8 times, resulting in a remainder of 720.
The number 8 becomes the next digit in our result. 
Result so far: 9451.8
Subtracting 7400 from 8120 leaves us with 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7200, and continue the process.

Let's proceed to step 9:
If we divide 7200 by 925, we get 7 and a remainder of 725.
The number 7 becomes the next digit in our result. 
Result so far: 9451.87
Subtracting 6475 from 7200 leaves us with 725.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7250, and continue the process.

On to step 10:
When dividing 7250 by 925, we get 7 with a remainder of 775.
Use 7 as the next digit of our solution. 
Result so far: 9451.877
Deduct 6475 from 7250 and we're left with 775.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7750, and continue the process.

The final result is 9451.877 with a remainder of 0.0775.