We look at the division of 75814521 by 560 
The aim is to understand the frequency of 560 in 75814521.

Going ahead to step 1:
7 divided by 560 is 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Append the next digit (5) from the dividend to 7 and continue with: 75 / 560

Moving on to step 2:
If we divide 75 by 560, we get 0 and a remainder of 75.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 75, we get 75.
Bring next digit (8) of the dividend behind the 75 and repeat the process: 758 / 560

Step 3:
The number 560 fits into 758 1 times, leaving a remainder of 198.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 560 away from 758, we end up with 198.
Bring next digit (1) of the dividend behind the 198 and repeat the process: 1981 / 560

On to step 4:
The number 560 fits into 1981 3 times, leaving a remainder of 301.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
If we take 1680 away from 1981, we end up with 301.
Take the next digit (4) from the dividend and append it to 301, then repeat: 3014 / 560

Advancing to step 5:
If we divide 3014 by 560, we get 5 and a remainder of 214.
The number 5 becomes the next digit in our result. 
Result so far: 135.0
The remainder is 214 after subtracting 2800 from 3014.
Append the next digit (5) from the dividend to 214 and continue with: 2145 / 560

Moving on to step 6:
560 goes into 2145 3 times with a remainder of 465.
Write down 3 as next digit of the result. 
Result so far: 1353.0
If we take 1680 away from 2145, we end up with 465.
Bring next digit (2) of the dividend behind the 465 and repeat the process: 4652 / 560

Moving on to step 7:
When dividing 4652 by 560, we get 8 with a remainder of 172.
Write down 8 as next digit of the result. 
Result so far: 13538.0
If we take 4480 away from 4652, we end up with 172.
Append the next digit (1) from the dividend to 172 and continue with: 1721 / 560

Going ahead to step 8:
If we divide 1721 by 560, we get 3 and a remainder of 41.
Record the quotient 3 as the next digit in the result. 
Result so far: 135383.0
Subtracting 1680 from 1721 leaves us with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Let's proceed to step 9:
If we divide 410 by 560, we get 0 and a remainder of 410.
The next digit of our result is 0. 
Result so far: 135383.0
Subtracting 0 from 410 leaves us with 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 10:
When dividing 4100 by 560, we get 7 with a remainder of 180.
Write down 7 as next digit of the result. 
Result so far: 135383.07
If we take 3920 away from 4100, we end up with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Moving on to step 11:
The number 560 fits into 1800 3 times, leaving a remainder of 120.
Write down 3 as next digit of the result. 
Result so far: 135383.073
Deduct 1680 from 1800 and we're left with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Moving on to step 12:
If we divide 1200 by 560, we get 2 and a remainder of 80.
Put 2 as the next digit of the answer. 
Result so far: 135383.0732
If we subtract 1120 from 1200, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 13:
800 divided by 560 is 1 with a remainder of 240.
Write down 1 as next digit of the result. 
Result so far: 135383.07321
If we take 560 away from 800, 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.

Let's proceed to step 14:
560 can be fit into 2400 4 times, resulting in a remainder of 160.
Put 4 as the next digit of the answer. 
Result so far: 135383.073214
Deduct 2240 from 2400 and we're left with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

On to step 15:
If we divide 1600 by 560, we get 2 and a remainder of 480.
Use 2 as the next digit of our solution. 
Result so far: 135383.0732142
Subtract 1120 from 1600 to get 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Advancing to step 16:
560 goes into 4800 8 times with a remainder of 320.
Put 8 as the next digit of the answer. 
Result so far: 135383.07321428
Subtracting 4480 from 4800 leaves us with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

The final outcome is 135383.07321428, with a leftover of 3.2e-07.