We're dividing 531849 by 7 
The aim is to understand the frequency of 7 in 531849.

Advancing to step 1:
7 goes into 5 0 times with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Fetch the next digit (3) from the dividend, attach it to 5 and continue: 53 / 7

Moving on to step 2:
The number 7 fits into 53 7 times, leaving a remainder of 4.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Subtract 49 from 53 to get 4.
Grab the next digit (1) from the dividend, add it to 4, then carry on: 41 / 7

Going ahead to step 3:
The number 7 fits into 41 5 times, leaving a remainder of 6.
Record the quotient 5 as the next digit in the result. 
Result so far: 75.0
If we take 35 away from 41, we end up with 6.
Include the next digit (8) from the dividend after 6, then repeat: 68 / 7

Going ahead to step 4:
7 goes into 68 9 times with a remainder of 5.
The number 9 becomes the next digit in our result. 
Result so far: 759.0
Deduct 63 from 68 and we're left with 5.
Append the next digit (4) from the dividend to 5 and continue with: 54 / 7

Going ahead to step 5:
7 can be fit into 54 7 times, resulting in a remainder of 5.
Record the quotient 7 as the next digit in the result. 
Result so far: 7597.0
The remainder is 5 after subtracting 49 from 54.
Append the next digit (9) from the dividend to 5 and continue with: 59 / 7

Going ahead to step 6:
7 can be fit into 59 8 times, resulting in a remainder of 3.
Write down 8 as next digit of the result. 
Result so far: 75978.0
Deduct 56 from 59 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 7:
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: 75978.4
The remainder is 2 after subtracting 28 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 8:
If we divide 20 by 7, we get 2 and a remainder of 6.
The next digit of our result is 2. 
Result so far: 75978.42
Deduct 14 from 20 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 9:
If we divide 60 by 7, we get 8 and a remainder of 4.
Use 8 as the next digit of our solution. 
Result so far: 75978.428
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.

Moving on to step 10:
The number 7 fits into 40 5 times, leaving a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 75978.4285
The remainder is 5 after subtracting 35 from 40.
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 11:
When dividing 50 by 7, we get 7 with a remainder of 1.
The next digit of our result is 7. 
Result so far: 75978.42857
The remainder is 1 after subtracting 49 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 12:
7 goes into 10 1 times with a remainder of 3.
Record the quotient 1 as the next digit in the result. 
Result so far: 75978.428571
Subtracting 7 from 10 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 13:
7 can be fit into 30 4 times, resulting in a remainder of 2.
Record the quotient 4 as the next digit in the result. 
Result so far: 75978.4285714
Deduct 28 from 30 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 14:
7 can be fit into 20 2 times, resulting in a remainder of 6.
Use 2 as the next digit of our solution. 
Result so far: 75978.42857142
If we take 14 away from 20, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

The quotient of the division is 75978.42857142, and the remainder is 6e-09.