We look at the division of 99214773 by 561 
The aim is to understand the frequency of 561 in 99214773.

Step 1:
9 divided by 561 is 0 with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Include the next digit (9) from the dividend after 9, then repeat: 99 / 561

On to step 2:
If we divide 99 by 561, we get 0 and a remainder of 99.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 99 to get 99.
Append the next digit (2) from the dividend to 99 and continue with: 992 / 561

Step 3:
992 divided by 561 is 1 with a remainder of 431.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 561 from 992 leaves us with 431.
Grab the next digit (1) from the dividend, add it to 431, then carry on: 4311 / 561

Moving on to step 4:
561 can be fit into 4311 7 times, resulting in a remainder of 384.
Put 7 as the next digit of the answer. 
Result so far: 17.0
If we subtract 3927 from 4311, we get 384.
Fetch the next digit (4) from the dividend, attach it to 384 and continue: 3844 / 561

On to step 5:
3844 divided by 561 is 6 with a remainder of 478.
Use 6 as the next digit of our solution. 
Result so far: 176.0
If we subtract 3366 from 3844, we get 478.
Append the next digit (7) from the dividend to 478 and continue with: 4787 / 561

Advancing to step 6:
4787 divided by 561 is 8 with a remainder of 299.
Put 8 as the next digit of the answer. 
Result so far: 1768.0
If we subtract 4488 from 4787, we get 299.
Bring next digit (7) of the dividend behind the 299 and repeat the process: 2997 / 561

Step 7:
If we divide 2997 by 561, we get 5 and a remainder of 192.
Write down 5 as next digit of the result. 
Result so far: 17685.0
Subtract 2805 from 2997 to get 192.
Bring next digit (3) of the dividend behind the 192 and repeat the process: 1923 / 561

Going ahead to step 8:
561 can be fit into 1923 3 times, resulting in a remainder of 240.
The number 3 becomes the next digit in our result. 
Result so far: 176853.0
If we take 1683 away from 1923, we end up with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

On to step 9:
The number 561 fits into 2400 4 times, leaving a remainder of 156.
The number 4 becomes the next digit in our result. 
Result so far: 176853.4
Deduct 2244 from 2400 and we're left with 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

Advancing to step 10:
561 goes into 1560 2 times with a remainder of 438.
Put 2 as the next digit of the answer. 
Result so far: 176853.42
The remainder is 438 after subtracting 1122 from 1560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4380, and continue the process.

Advancing to step 11:
4380 divided by 561 is 7 with a remainder of 453.
Put 7 as the next digit of the answer. 
Result so far: 176853.427
If we subtract 3927 from 4380, we get 453.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4530, and continue the process.

On to step 12:
If we divide 4530 by 561, we get 8 and a remainder of 42.
The next digit of our result is 8. 
Result so far: 176853.4278
If we subtract 4488 from 4530, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

On to step 13:
420 divided by 561 is 0 with a remainder of 420.
The next digit of our result is 0. 
Result so far: 176853.4278
The remainder is 420 after subtracting 0 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Advancing to step 14:
If we divide 4200 by 561, we get 7 and a remainder of 273.
Put 7 as the next digit of the answer. 
Result so far: 176853.427807
If we take 3927 away from 4200, we end up with 273.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2730, and continue the process.

Going ahead to step 15:
561 can be fit into 2730 4 times, resulting in a remainder of 486.
The next digit of our result is 4. 
Result so far: 176853.4278074
Subtract 2244 from 2730 to get 486.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4860, and continue the process.

Let's proceed to step 16:
If we divide 4860 by 561, we get 8 and a remainder of 372.
Record the quotient 8 as the next digit in the result. 
Result so far: 176853.42780748
Subtracting 4488 from 4860 leaves us with 372.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

In conclusion, the division gives 176853.42780748 with a balance of 3.72e-07.