We're dividing 25284547 by 987 
The aim is to understand the frequency of 987 in 25284547.

On to step 1:
The number 987 fits into 2 0 times, leaving a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Grab the next digit (5) from the dividend, add it to 2, then carry on: 25 / 987

Let's proceed to step 2:
If we divide 25 by 987, we get 0 and a remainder of 25.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 25 after subtracting 0 from 25.
Take the next digit (2) from the dividend and append it to 25, then repeat: 252 / 987

Going ahead to step 3:
252 divided by 987 is 0 with a remainder of 252.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 252, we get 252.
Include the next digit (8) from the dividend after 252, then repeat: 2528 / 987

Going ahead to step 4:
If we divide 2528 by 987, we get 2 and a remainder of 554.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtract 1974 from 2528 to get 554.
Grab the next digit (4) from the dividend, add it to 554, then carry on: 5544 / 987

Going ahead to step 5:
5544 divided by 987 is 5 with a remainder of 609.
The number 5 becomes the next digit in our result. 
Result so far: 25.0
Deduct 4935 from 5544 and we're left with 609.
Grab the next digit (5) from the dividend, add it to 609, then carry on: 6095 / 987

On to step 6:
6095 divided by 987 is 6 with a remainder of 173.
Write down 6 as next digit of the result. 
Result so far: 256.0
Subtract 5922 from 6095 to get 173.
Include the next digit (4) from the dividend after 173, then repeat: 1734 / 987

Step 7:
If we divide 1734 by 987, we get 1 and a remainder of 747.
Record the quotient 1 as the next digit in the result. 
Result so far: 2561.0
If we take 987 away from 1734, we end up with 747.
Grab the next digit (7) from the dividend, add it to 747, then carry on: 7477 / 987

Going ahead to step 8:
987 goes into 7477 7 times with a remainder of 568.
The next digit of our result is 7. 
Result so far: 25617.0
Deduct 6909 from 7477 and we're left with 568.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5680, and continue the process.

On to step 9:
987 can be fit into 5680 5 times, resulting in a remainder of 745.
Record the quotient 5 as the next digit in the result. 
Result so far: 25617.5
The remainder is 745 after subtracting 4935 from 5680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7450, and continue the process.

Going ahead to step 10:
The number 987 fits into 7450 7 times, leaving a remainder of 541.
The number 7 becomes the next digit in our result. 
Result so far: 25617.57
Subtracting 6909 from 7450 leaves us with 541.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5410, and continue the process.

Let's proceed to step 11:
If we divide 5410 by 987, we get 5 and a remainder of 475.
Record the quotient 5 as the next digit in the result. 
Result so far: 25617.575
The remainder is 475 after subtracting 4935 from 5410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4750, and continue the process.

Step 12:
If we divide 4750 by 987, we get 4 and a remainder of 802.
The number 4 becomes the next digit in our result. 
Result so far: 25617.5754
If we subtract 3948 from 4750, we get 802.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8020, and continue the process.

Let's proceed to step 13:
The number 987 fits into 8020 8 times, leaving a remainder of 124.
The number 8 becomes the next digit in our result. 
Result so far: 25617.57548
Deduct 7896 from 8020 and we're left with 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

On to step 14:
987 goes into 1240 1 times with a remainder of 253.
Use 1 as the next digit of our solution. 
Result so far: 25617.575481
If we subtract 987 from 1240, we get 253.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2530, and continue the process.

Step 15:
2530 divided by 987 is 2 with a remainder of 556.
The number 2 becomes the next digit in our result. 
Result so far: 25617.5754812
Subtract 1974 from 2530 to get 556.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5560, and continue the process.

Moving on to step 16:
The number 987 fits into 5560 5 times, leaving a remainder of 625.
Put 5 as the next digit of the answer. 
Result so far: 25617.57548125
If we take 4935 away from 5560, we end up with 625.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6250, and continue the process.

In conclusion, the division gives 25617.57548125 with a balance of 6.25e-07.