571582 ÷ 7 
The aim is to understand the frequency of 7 in 571582.

Going ahead to step 1:
5 divided by 7 is 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Include the next digit (7) from the dividend after 5, then repeat: 57 / 7

Let's proceed to step 2:
7 goes into 57 8 times with a remainder of 1.
Use 8 as the next digit of our solution. 
Result so far: 8.0
If we take 56 away from 57, we end up with 1.
Fetch the next digit (1) from the dividend, attach it to 1 and continue: 11 / 7

On to step 3:
When dividing 11 by 7, we get 1 with a remainder of 4.
Use 1 as the next digit of our solution. 
Result so far: 81.0
If we take 7 away from 11, we end up with 4.
Include the next digit (5) from the dividend after 4, then repeat: 45 / 7

Let's proceed to step 4:
45 divided by 7 is 6 with a remainder of 3.
The next digit of our result is 6. 
Result so far: 816.0
Deduct 42 from 45 and we're left with 3.
Take the next digit (8) from the dividend and append it to 3, then repeat: 38 / 7

Moving on to step 5:
If we divide 38 by 7, we get 5 and a remainder of 3.
Write down 5 as next digit of the result. 
Result so far: 8165.0
Subtracting 35 from 38 leaves us with 3.
Take the next digit (2) from the dividend and append it to 3, then repeat: 32 / 7

Moving on to step 6:
7 can be fit into 32 4 times, resulting in a remainder of 4.
Use 4 as the next digit of our solution. 
Result so far: 81654.0
Subtracting 28 from 32 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 7:
The number 7 fits into 40 5 times, leaving a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 81654.5
If we take 35 away from 40, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 8:
The number 7 fits into 50 7 times, leaving a remainder of 1.
Put 7 as the next digit of the answer. 
Result so far: 81654.57
If we take 49 away from 50, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 9:
7 can be fit into 10 1 times, resulting in a remainder of 3.
The number 1 becomes the next digit in our result. 
Result so far: 81654.571
If we subtract 7 from 10, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 10:
The number 7 fits into 30 4 times, leaving a remainder of 2.
Put 4 as the next digit of the answer. 
Result so far: 81654.5714
Subtracting 28 from 30 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 11:
7 can be fit into 20 2 times, resulting in a remainder of 6.
Write down 2 as next digit of the result. 
Result so far: 81654.57142
If we subtract 14 from 20, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 12:
When dividing 60 by 7, we get 8 with a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 81654.571428
The remainder is 4 after subtracting 56 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 13:
When dividing 40 by 7, we get 5 with a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 81654.5714285
Subtracting 35 from 40 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 14:
7 can be fit into 50 7 times, resulting in a remainder of 1.
Write down 7 as next digit of the result. 
Result so far: 81654.57142857
Deduct 49 from 50 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

After the division, we end up with 81654.57142857 and a remainder of 1e-09.