Let's divide 17461865 by 561
The aim is to understand the frequency of 561 in 17461865.

Step 1:
561 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Bring next digit (7) of the dividend behind the 1 and repeat the process: 17 / 561

Step 2:
561 can be fit into 17 0 times, resulting in a remainder of 17.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 17 after subtracting 0 from 17.
Grab the next digit (4) from the dividend, add it to 17, then carry on: 174 / 561

Moving on to step 3:
The number 561 fits into 174 0 times, leaving a remainder of 174.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 174, we end up with 174.
Take the next digit (6) from the dividend and append it to 174, then repeat: 1746 / 561

Advancing to step 4:
1746 divided by 561 is 3 with a remainder of 63.
Put 3 as the next digit of the answer. 
Result so far: 3.0
The remainder is 63 after subtracting 1683 from 1746.
Append the next digit (1) from the dividend to 63 and continue with: 631 / 561

On to step 5:
If we divide 631 by 561, we get 1 and a remainder of 70.
The number 1 becomes the next digit in our result. 
Result so far: 31.0
Subtract 561 from 631 to get 70.
Append the next digit (8) from the dividend to 70 and continue with: 708 / 561

Step 6:
The number 561 fits into 708 1 times, leaving a remainder of 147.
The next digit of our result is 1. 
Result so far: 311.0
Subtract 561 from 708 to get 147.
Include the next digit (6) from the dividend after 147, then repeat: 1476 / 561

On to step 7:
If we divide 1476 by 561, we get 2 and a remainder of 354.
Put 2 as the next digit of the answer. 
Result so far: 3112.0
If we subtract 1122 from 1476, we get 354.
Bring next digit (5) of the dividend behind the 354 and repeat the process: 3545 / 561

Moving on to step 8:
The number 561 fits into 3545 6 times, leaving a remainder of 179.
Use 6 as the next digit of our solution. 
Result so far: 31126.0
Subtracting 3366 from 3545 leaves us with 179.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1790, and continue the process.

On to step 9:
If we divide 1790 by 561, we get 3 and a remainder of 107.
Write down 3 as next digit of the result. 
Result so far: 31126.3
Subtract 1683 from 1790 to get 107.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1070, and continue the process.

Going ahead to step 10:
561 can be fit into 1070 1 times, resulting in a remainder of 509.
The number 1 becomes the next digit in our result. 
Result so far: 31126.31
Subtracting 561 from 1070 leaves us with 509.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5090, and continue the process.

Going ahead to step 11:
When dividing 5090 by 561, we get 9 with a remainder of 41.
Record the quotient 9 as the next digit in the result. 
Result so far: 31126.319
If we subtract 5049 from 5090, we get 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Advancing to step 12:
561 can be fit into 410 0 times, resulting in a remainder of 410.
Record the quotient 0 as the next digit in the result. 
Result so far: 31126.319
The remainder is 410 after subtracting 0 from 410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4100, and continue the process.

Let's proceed to step 13:
561 goes into 4100 7 times with a remainder of 173.
Put 7 as the next digit of the answer. 
Result so far: 31126.31907
If we take 3927 away from 4100, we end up with 173.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1730, and continue the process.

Going ahead to step 14:
If we divide 1730 by 561, we get 3 and a remainder of 47.
Record the quotient 3 as the next digit in the result. 
Result so far: 31126.319073
Deduct 1683 from 1730 and we're left with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Advancing to step 15:
561 goes into 470 0 times with a remainder of 470.
Write down 0 as next digit of the result. 
Result so far: 31126.319073
If we take 0 away from 470, we end up with 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4700, and continue the process.

Step 16:
When dividing 4700 by 561, we get 8 with a remainder of 212.
The number 8 becomes the next digit in our result. 
Result so far: 31126.31907308
If we subtract 4488 from 4700, we get 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

After the division, we end up with 31126.31907308 and a remainder of 2.12e-07.