We're dividing 531785 by 7 
The aim is to understand the frequency of 7 in 531785.

Step 1:
5 divided by 7 is 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Fetch the next digit (3) from the dividend, attach it to 5 and continue: 53 / 7

Going ahead to step 2:
When dividing 53 by 7, we get 7 with a remainder of 4.
The next digit of our result is 7. 
Result so far: 7.0
If we subtract 49 from 53, we get 4.
Fetch the next digit (1) from the dividend, attach it to 4 and continue: 41 / 7

Moving on to step 3:
The number 7 fits into 41 5 times, leaving a remainder of 6.
Use 5 as the next digit of our solution. 
Result so far: 75.0
Subtract 35 from 41 to get 6.
Append the next digit (7) from the dividend to 6 and continue with: 67 / 7

Advancing to step 4:
7 goes into 67 9 times with a remainder of 4.
Use 9 as the next digit of our solution. 
Result so far: 759.0
The remainder is 4 after subtracting 63 from 67.
Append the next digit (8) from the dividend to 4 and continue with: 48 / 7

Going ahead to step 5:
The number 7 fits into 48 6 times, leaving a remainder of 6.
Put 6 as the next digit of the answer. 
Result so far: 7596.0
If we subtract 42 from 48, we get 6.
Append the next digit (5) from the dividend to 6 and continue with: 65 / 7

Step 6:
7 can be fit into 65 9 times, resulting in a remainder of 2.
Record the quotient 9 as the next digit in the result. 
Result so far: 75969.0
Deduct 63 from 65 and we're left 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.

Let's proceed to step 7:
If we divide 20 by 7, we get 2 and a remainder of 6.
Use 2 as the next digit of our solution. 
Result so far: 75969.2
Subtract 14 from 20 to 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.

Let's proceed to step 8:
If we divide 60 by 7, we get 8 and a remainder of 4.
The next digit of our result is 8. 
Result so far: 75969.28
Deduct 56 from 60 and we're left 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.

Step 9:
7 can be fit into 40 5 times, resulting in a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 75969.285
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 10:
When dividing 50 by 7, we get 7 with a remainder of 1.
Write down 7 as next digit of the result. 
Result so far: 75969.2857
If we subtract 49 from 50, we get 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 11:
10 divided by 7 is 1 with a remainder of 3.
Use 1 as the next digit of our solution. 
Result so far: 75969.28571
The remainder is 3 after subtracting 7 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 12:
The number 7 fits into 30 4 times, leaving a remainder of 2.
Record the quotient 4 as the next digit in the result. 
Result so far: 75969.285714
If we take 28 away from 30, we end up 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.

Step 13:
7 can be fit into 20 2 times, resulting in a remainder of 6.
The next digit of our result is 2. 
Result so far: 75969.2857142
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.

Moving on to step 14:
When dividing 60 by 7, we get 8 with a remainder of 4.
Use 8 as the next digit of our solution. 
Result so far: 75969.28571428
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.

In conclusion, the division gives 75969.28571428 with a balance of 4e-09.