We divide 90888625 by 561
The aim is to understand the frequency of 561 in 90888625.

Going ahead to step 1:
If we divide 9 by 561, we get 0 and a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Take the next digit (0) from the dividend and append it to 9, then repeat: 90 / 561

Step 2:
561 goes into 90 0 times with a remainder of 90.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 90, we end up with 90.
Include the next digit (8) from the dividend after 90, then repeat: 908 / 561

Step 3:
If we divide 908 by 561, we get 1 and a remainder of 347.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 561 away from 908, we end up with 347.
Fetch the next digit (8) from the dividend, attach it to 347 and continue: 3478 / 561

Moving on to step 4:
561 goes into 3478 6 times with a remainder of 112.
Record the quotient 6 as the next digit in the result. 
Result so far: 16.0
Subtract 3366 from 3478 to get 112.
Fetch the next digit (8) from the dividend, attach it to 112 and continue: 1128 / 561

Going ahead to step 5:
561 can be fit into 1128 2 times, resulting in a remainder of 6.
Use 2 as the next digit of our solution. 
Result so far: 162.0
If we take 1122 away from 1128, we end up with 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 561

Advancing to step 6:
When dividing 66 by 561, we get 0 with a remainder of 66.
Use 0 as the next digit of our solution. 
Result so far: 1620.0
If we subtract 0 from 66, we get 66.
Append the next digit (2) from the dividend to 66 and continue with: 662 / 561

Going ahead to step 7:
When dividing 662 by 561, we get 1 with a remainder of 101.
Use 1 as the next digit of our solution. 
Result so far: 16201.0
The remainder is 101 after subtracting 561 from 662.
Bring next digit (5) of the dividend behind the 101 and repeat the process: 1015 / 561

On to step 8:
561 goes into 1015 1 times with a remainder of 454.
Write down 1 as next digit of the result. 
Result so far: 162011.0
Subtract 561 from 1015 to get 454.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4540, and continue the process.

Step 9:
When dividing 4540 by 561, we get 8 with a remainder of 52.
The number 8 becomes the next digit in our result. 
Result so far: 162011.8
Subtract 4488 from 4540 to get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Going ahead to step 10:
561 can be fit into 520 0 times, resulting in a remainder of 520.
The next digit of our result is 0. 
Result so far: 162011.8
If we take 0 away from 520, we end up with 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

On to step 11:
5200 divided by 561 is 9 with a remainder of 151.
Use 9 as the next digit of our solution. 
Result so far: 162011.809
Subtract 5049 from 5200 to get 151.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1510, and continue the process.

Step 12:
If we divide 1510 by 561, we get 2 and a remainder of 388.
Use 2 as the next digit of our solution. 
Result so far: 162011.8092
Subtracting 1122 from 1510 leaves us with 388.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3880, and continue the process.

Advancing to step 13:
561 goes into 3880 6 times with a remainder of 514.
The next digit of our result is 6. 
Result so far: 162011.80926
Subtract 3366 from 3880 to get 514.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5140, and continue the process.

Advancing to step 14:
The number 561 fits into 5140 9 times, leaving a remainder of 91.
Write down 9 as next digit of the result. 
Result so far: 162011.809269
If we take 5049 away from 5140, we end up with 91.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

Let's proceed to step 15:
When dividing 910 by 561, we get 1 with a remainder of 349.
Record the quotient 1 as the next digit in the result. 
Result so far: 162011.8092691
Deduct 561 from 910 and we're left with 349.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3490, and continue the process.

Step 16:
561 can be fit into 3490 6 times, resulting in a remainder of 124.
The next digit of our result is 6. 
Result so far: 162011.80926916
The remainder is 124 after subtracting 3366 from 3490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

In conclusion, the division gives 162011.80926916 with a balance of 1.24e-07.