87581502 ÷ 987 
The aim is to understand the frequency of 987 in 87581502.

Going ahead to step 1:
When dividing 8 by 987, we get 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Append the next digit (7) from the dividend to 8 and continue with: 87 / 987

Step 2:
987 goes into 87 0 times with a remainder of 87.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 87 after subtracting 0 from 87.
Take the next digit (5) from the dividend and append it to 87, then repeat: 875 / 987

On to step 3:
875 divided by 987 is 0 with a remainder of 875.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 875 to get 875.
Append the next digit (8) from the dividend to 875 and continue with: 8758 / 987

Step 4:
987 can be fit into 8758 8 times, resulting in a remainder of 862.
The next digit of our result is 8. 
Result so far: 8.0
Subtract 7896 from 8758 to get 862.
Take the next digit (1) from the dividend and append it to 862, then repeat: 8621 / 987

Step 5:
8621 divided by 987 is 8 with a remainder of 725.
The number 8 becomes the next digit in our result. 
Result so far: 88.0
If we take 7896 away from 8621, we end up with 725.
Append the next digit (5) from the dividend to 725 and continue with: 7255 / 987

Moving on to step 6:
7255 divided by 987 is 7 with a remainder of 346.
Write down 7 as next digit of the result. 
Result so far: 887.0
If we subtract 6909 from 7255, we get 346.
Append the next digit (0) from the dividend to 346 and continue with: 3460 / 987

Moving on to step 7:
987 can be fit into 3460 3 times, resulting in a remainder of 499.
The next digit of our result is 3. 
Result so far: 8873.0
If we take 2961 away from 3460, we end up with 499.
Take the next digit (2) from the dividend and append it to 499, then repeat: 4992 / 987

On to step 8:
987 goes into 4992 5 times with a remainder of 57.
The number 5 becomes the next digit in our result. 
Result so far: 88735.0
If we subtract 4935 from 4992, we get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Moving on to step 9:
570 divided by 987 is 0 with a remainder of 570.
The number 0 becomes the next digit in our result. 
Result so far: 88735.0
If we subtract 0 from 570, we get 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5700, and continue the process.

Moving on to step 10:
If we divide 5700 by 987, we get 5 and a remainder of 765.
Put 5 as the next digit of the answer. 
Result so far: 88735.05
The remainder is 765 after subtracting 4935 from 5700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7650, and continue the process.

Let's proceed to step 11:
7650 divided by 987 is 7 with a remainder of 741.
Put 7 as the next digit of the answer. 
Result so far: 88735.057
Deduct 6909 from 7650 and we're left with 741.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7410, and continue the process.

Moving on to step 12:
The number 987 fits into 7410 7 times, leaving a remainder of 501.
Record the quotient 7 as the next digit in the result. 
Result so far: 88735.0577
Subtracting 6909 from 7410 leaves us with 501.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5010, and continue the process.

The final outcome is 88735.0577, with a leftover of 0.00501.