We look at the division of 87553949 by 563 
The aim is to understand the frequency of 563 in 87553949.

Let's proceed to step 1:
563 goes into 8 0 times with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 563

Advancing to step 2:
563 goes into 87 0 times with a remainder of 87.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 87, we end up with 87.
Append the next digit (5) from the dividend to 87 and continue with: 875 / 563

Moving on to step 3:
The number 563 fits into 875 1 times, leaving a remainder of 312.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 563 from 875 and we're left with 312.
Bring next digit (5) of the dividend behind the 312 and repeat the process: 3125 / 563

Moving on to step 4:
When dividing 3125 by 563, we get 5 with a remainder of 310.
Use 5 as the next digit of our solution. 
Result so far: 15.0
Deduct 2815 from 3125 and we're left with 310.
Take the next digit (3) from the dividend and append it to 310, then repeat: 3103 / 563

Going ahead to step 5:
563 can be fit into 3103 5 times, resulting in a remainder of 288.
The next digit of our result is 5. 
Result so far: 155.0
Subtract 2815 from 3103 to get 288.
Fetch the next digit (9) from the dividend, attach it to 288 and continue: 2889 / 563

On to step 6:
The number 563 fits into 2889 5 times, leaving a remainder of 74.
Write down 5 as next digit of the result. 
Result so far: 1555.0
Subtracting 2815 from 2889 leaves us with 74.
Fetch the next digit (4) from the dividend, attach it to 74 and continue: 744 / 563

Advancing to step 7:
If we divide 744 by 563, we get 1 and a remainder of 181.
The next digit of our result is 1. 
Result so far: 15551.0
Subtract 563 from 744 to get 181.
Bring next digit (9) of the dividend behind the 181 and repeat the process: 1819 / 563

Let's proceed to step 8:
The number 563 fits into 1819 3 times, leaving a remainder of 130.
The next digit of our result is 3. 
Result so far: 155513.0
Subtract 1689 from 1819 to get 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Let's proceed to step 9:
563 goes into 1300 2 times with a remainder of 174.
The next digit of our result is 2. 
Result so far: 155513.2
If we subtract 1126 from 1300, we get 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Going ahead to step 10:
The number 563 fits into 1740 3 times, leaving a remainder of 51.
Write down 3 as next digit of the result. 
Result so far: 155513.23
Deduct 1689 from 1740 and we're left with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Advancing to step 11:
563 can be fit into 510 0 times, resulting in a remainder of 510.
The number 0 becomes the next digit in our result. 
Result so far: 155513.23
Deduct 0 from 510 and we're left with 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5100, and continue the process.

On to step 12:
563 goes into 5100 9 times with a remainder of 33.
Put 9 as the next digit of the answer. 
Result so far: 155513.2309
Deduct 5067 from 5100 and we're left with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Advancing to step 13:
When dividing 330 by 563, we get 0 with a remainder of 330.
Record the quotient 0 as the next digit in the result. 
Result so far: 155513.2309
Subtract 0 from 330 to get 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

Moving on to step 14:
If we divide 3300 by 563, we get 5 and a remainder of 485.
Use 5 as the next digit of our solution. 
Result so far: 155513.230905
Deduct 2815 from 3300 and we're left with 485.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4850, and continue the process.

Moving on to step 15:
563 goes into 4850 8 times with a remainder of 346.
The number 8 becomes the next digit in our result. 
Result so far: 155513.2309058
Deduct 4504 from 4850 and we're left with 346.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3460, and continue the process.

Going ahead to step 16:
The number 563 fits into 3460 6 times, leaving a remainder of 82.
Record the quotient 6 as the next digit in the result. 
Result so far: 155513.23090586
The remainder is 82 after subtracting 3378 from 3460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

After the division, we end up with 155513.23090586 and a remainder of 8.2e-08.