86661740 ÷ 975 
The aim is to understand the frequency of 975 in 86661740.

Moving on to step 1:
When dividing 8 by 975, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 975

Step 2:
975 can be fit into 86 0 times, resulting in a remainder of 86.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 86, we get 86.
Grab the next digit (6) from the dividend, add it to 86, then carry on: 866 / 975

Going ahead to step 3:
975 can be fit into 866 0 times, resulting in a remainder of 866.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 866, we get 866.
Append the next digit (6) from the dividend to 866 and continue with: 8666 / 975

Let's proceed to step 4:
8666 divided by 975 is 8 with a remainder of 866.
Use 8 as the next digit of our solution. 
Result so far: 8.0
If we subtract 7800 from 8666, we get 866.
Append the next digit (1) from the dividend to 866 and continue with: 8661 / 975

On to step 5:
975 can be fit into 8661 8 times, resulting in a remainder of 861.
Write down 8 as next digit of the result. 
Result so far: 88.0
The remainder is 861 after subtracting 7800 from 8661.
Take the next digit (7) from the dividend and append it to 861, then repeat: 8617 / 975

Step 6:
When dividing 8617 by 975, we get 8 with a remainder of 817.
Put 8 as the next digit of the answer. 
Result so far: 888.0
If we subtract 7800 from 8617, we get 817.
Include the next digit (4) from the dividend after 817, then repeat: 8174 / 975

Moving on to step 7:
8174 divided by 975 is 8 with a remainder of 374.
Record the quotient 8 as the next digit in the result. 
Result so far: 8888.0
If we subtract 7800 from 8174, we get 374.
Append the next digit (0) from the dividend to 374 and continue with: 3740 / 975

Going ahead to step 8:
If we divide 3740 by 975, we get 3 and a remainder of 815.
The next digit of our result is 3. 
Result so far: 88883.0
If we subtract 2925 from 3740, we get 815.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8150, and continue the process.

Going ahead to step 9:
975 can be fit into 8150 8 times, resulting in a remainder of 350.
Record the quotient 8 as the next digit in the result. 
Result so far: 88883.8
Deduct 7800 from 8150 and we're left with 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Let's proceed to step 10:
975 goes into 3500 3 times with a remainder of 575.
Use 3 as the next digit of our solution. 
Result so far: 88883.83
Subtracting 2925 from 3500 leaves us with 575.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5750, and continue the process.

Moving on to step 11:
The number 975 fits into 5750 5 times, leaving a remainder of 875.
Use 5 as the next digit of our solution. 
Result so far: 88883.835
The remainder is 875 after subtracting 4875 from 5750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8750, and continue the process.

Moving on to step 12:
The number 975 fits into 8750 8 times, leaving a remainder of 950.
Put 8 as the next digit of the answer. 
Result so far: 88883.8358
Subtracting 7800 from 8750 leaves us with 950.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9500, and continue the process.

Let's proceed to step 13:
If we divide 9500 by 975, we get 9 and a remainder of 725.
The number 9 becomes the next digit in our result. 
Result so far: 88883.83589
The remainder is 725 after subtracting 8775 from 9500.
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 14:
If we divide 7250 by 975, we get 7 and a remainder of 425.
The number 7 becomes the next digit in our result. 
Result so far: 88883.835897
If we take 6825 away from 7250, we end up with 425.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4250, and continue the process.

Step 15:
The number 975 fits into 4250 4 times, leaving a remainder of 350.
The next digit of our result is 4. 
Result so far: 88883.8358974
Subtract 3900 from 4250 to get 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

On to step 16:
3500 divided by 975 is 3 with a remainder of 575.
Record the quotient 3 as the next digit in the result. 
Result so far: 88883.83589743
Deduct 2925 from 3500 and we're left with 575.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5750, and continue the process.

After the division, we end up with 88883.83589743 and a remainder of 5.75e-07.