We look at the division of 50055207 by 561 
The aim is to understand the frequency of 561 in 50055207.

Going ahead to step 1:
If we divide 5 by 561, we get 0 and a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Fetch the next digit (0) from the dividend, attach it to 5 and continue: 50 / 561

Advancing to step 2:
561 goes into 50 0 times with a remainder of 50.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 50 leaves us with 50.
Append the next digit (0) from the dividend to 50 and continue with: 500 / 561

Step 3:
If we divide 500 by 561, we get 0 and a remainder of 500.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 500 to get 500.
Append the next digit (5) from the dividend to 500 and continue with: 5005 / 561

Going ahead to step 4:
If we divide 5005 by 561, we get 8 and a remainder of 517.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Subtract 4488 from 5005 to get 517.
Grab the next digit (5) from the dividend, add it to 517, then carry on: 5175 / 561

Moving on to step 5:
561 goes into 5175 9 times with a remainder of 126.
Record the quotient 9 as the next digit in the result. 
Result so far: 89.0
Subtract 5049 from 5175 to get 126.
Fetch the next digit (2) from the dividend, attach it to 126 and continue: 1262 / 561

On to step 6:
If we divide 1262 by 561, we get 2 and a remainder of 140.
Record the quotient 2 as the next digit in the result. 
Result so far: 892.0
If we take 1122 away from 1262, we end up with 140.
Append the next digit (0) from the dividend to 140 and continue with: 1400 / 561

Advancing to step 7:
561 goes into 1400 2 times with a remainder of 278.
Record the quotient 2 as the next digit in the result. 
Result so far: 8922.0
If we subtract 1122 from 1400, we get 278.
Bring next digit (7) of the dividend behind the 278 and repeat the process: 2787 / 561

Going ahead to step 8:
The number 561 fits into 2787 4 times, leaving a remainder of 543.
Put 4 as the next digit of the answer. 
Result so far: 89224.0
Subtract 2244 from 2787 to get 543.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5430, and continue the process.

Let's proceed to step 9:
561 goes into 5430 9 times with a remainder of 381.
Use 9 as the next digit of our solution. 
Result so far: 89224.9
Subtracting 5049 from 5430 leaves us with 381.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3810, and continue the process.

Let's proceed to step 10:
The number 561 fits into 3810 6 times, leaving a remainder of 444.
The number 6 becomes the next digit in our result. 
Result so far: 89224.96
Deduct 3366 from 3810 and we're left 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.

Going ahead to step 11:
561 goes into 4440 7 times with a remainder of 513.
Record the quotient 7 as the next digit in the result. 
Result so far: 89224.967
If we take 3927 away from 4440, we end up with 513.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5130, and continue the process.

Let's proceed to step 12:
The number 561 fits into 5130 9 times, leaving a remainder of 81.
Put 9 as the next digit of the answer. 
Result so far: 89224.9679
If we subtract 5049 from 5130, we get 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Moving on to step 13:
The number 561 fits into 810 1 times, leaving a remainder of 249.
Record the quotient 1 as the next digit in the result. 
Result so far: 89224.96791
The remainder is 249 after subtracting 561 from 810.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2490, and continue the process.

Going ahead to step 14:
561 goes into 2490 4 times with a remainder of 246.
Put 4 as the next digit of the answer. 
Result so far: 89224.967914
Deduct 2244 from 2490 and we're left with 246.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2460, and continue the process.

Going ahead to step 15:
When dividing 2460 by 561, we get 4 with a remainder of 216.
Record the quotient 4 as the next digit in the result. 
Result so far: 89224.9679144
If we subtract 2244 from 2460, we get 216.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

In conclusion, the division gives 89224.9679144 with a balance of 2.16e-06.