9975888 divided by 812 
The aim is to understand the frequency of 812 in 9975888.

Step 1:
The number 812 fits into 9 0 times, leaving a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Include the next digit (9) from the dividend after 9, then repeat: 99 / 812

Step 2:
812 goes into 99 0 times with a remainder of 99.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 99, we get 99.
Bring next digit (7) of the dividend behind the 99 and repeat the process: 997 / 812

Let's proceed to step 3:
812 can be fit into 997 1 times, resulting in a remainder of 185.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 812 from 997, we get 185.
Take the next digit (5) from the dividend and append it to 185, then repeat: 1855 / 812

Going ahead to step 4:
When dividing 1855 by 812, we get 2 with a remainder of 231.
The next digit of our result is 2. 
Result so far: 12.0
The remainder is 231 after subtracting 1624 from 1855.
Take the next digit (8) from the dividend and append it to 231, then repeat: 2318 / 812

Moving on to step 5:
812 goes into 2318 2 times with a remainder of 694.
The number 2 becomes the next digit in our result. 
Result so far: 122.0
Subtract 1624 from 2318 to get 694.
Bring next digit (8) of the dividend behind the 694 and repeat the process: 6948 / 812

Step 6:
The number 812 fits into 6948 8 times, leaving a remainder of 452.
Write down 8 as next digit of the result. 
Result so far: 1228.0
Subtract 6496 from 6948 to get 452.
Bring next digit (8) of the dividend behind the 452 and repeat the process: 4528 / 812

Advancing to step 7:
4528 divided by 812 is 5 with a remainder of 468.
Use 5 as the next digit of our solution. 
Result so far: 12285.0
The remainder is 468 after subtracting 4060 from 4528.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4680, and continue the process.

Going ahead to step 8:
The number 812 fits into 4680 5 times, leaving a remainder of 620.
Use 5 as the next digit of our solution. 
Result so far: 12285.5
If we subtract 4060 from 4680, we get 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 9:
If we divide 6200 by 812, we get 7 and a remainder of 516.
The next digit of our result is 7. 
Result so far: 12285.57
Subtracting 5684 from 6200 leaves us with 516.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5160, and continue the process.

Moving on to step 10:
If we divide 5160 by 812, we get 6 and a remainder of 288.
Write down 6 as next digit of the result. 
Result so far: 12285.576
If we subtract 4872 from 5160, we get 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Let's proceed to step 11:
2880 divided by 812 is 3 with a remainder of 444.
The next digit of our result is 3. 
Result so far: 12285.5763
Subtracting 2436 from 2880 leaves us with 444.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4440, and continue the process.

Advancing to step 12:
When dividing 4440 by 812, we get 5 with a remainder of 380.
Put 5 as the next digit of the answer. 
Result so far: 12285.57635
Subtracting 4060 from 4440 leaves us with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Advancing to step 13:
The number 812 fits into 3800 4 times, leaving a remainder of 552.
The number 4 becomes the next digit in our result. 
Result so far: 12285.576354
Deduct 3248 from 3800 and we're left with 552.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5520, and continue the process.

Advancing to step 14:
If we divide 5520 by 812, we get 6 and a remainder of 648.
The number 6 becomes the next digit in our result. 
Result so far: 12285.5763546
Subtract 4872 from 5520 to get 648.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6480, and continue the process.

Moving on to step 15:
812 goes into 6480 7 times with a remainder of 796.
The number 7 becomes the next digit in our result. 
Result so far: 12285.57635467
The remainder is 796 after subtracting 5684 from 6480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7960, and continue the process.

In conclusion, the division gives 12285.57635467 with a balance of 7.96e-07.