321805 divided by 7 
The aim is to understand the frequency of 7 in 321805.

On to step 1:
The number 7 fits into 3 0 times, leaving a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Fetch the next digit (2) from the dividend, attach it to 3 and continue: 32 / 7

Advancing to step 2:
If we divide 32 by 7, we get 4 and a remainder of 4.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtracting 28 from 32 leaves us with 4.
Fetch the next digit (1) from the dividend, attach it to 4 and continue: 41 / 7

Let's proceed to step 3:
7 goes into 41 5 times with a remainder of 6.
The number 5 becomes the next digit in our result. 
Result so far: 45.0
If we subtract 35 from 41, we get 6.
Include the next digit (8) from the dividend after 6, then repeat: 68 / 7

Let's proceed to step 4:
When dividing 68 by 7, we get 9 with a remainder of 5.
Put 9 as the next digit of the answer. 
Result so far: 459.0
The remainder is 5 after subtracting 63 from 68.
Bring next digit (0) of the dividend behind the 5 and repeat the process: 50 / 7

Moving on to step 5:
50 divided by 7 is 7 with a remainder of 1.
Put 7 as the next digit of the answer. 
Result so far: 4597.0
Subtract 49 from 50 to get 1.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 7

Going ahead to step 6:
7 can be fit into 15 2 times, resulting in a remainder of 1.
The number 2 becomes the next digit in our result. 
Result so far: 45972.0
The remainder is 1 after subtracting 14 from 15.
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 7:
7 goes into 10 1 times with a remainder of 3.
The next digit of our result is 1. 
Result so far: 45972.1
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.

Let's proceed to step 8:
30 divided by 7 is 4 with a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 45972.14
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.

Moving on to step 9:
When dividing 20 by 7, we get 2 with a remainder of 6.
The number 2 becomes the next digit in our result. 
Result so far: 45972.142
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 10:
If we divide 60 by 7, we get 8 and a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 45972.1428
If we take 56 away from 60, we end up 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.

Let's proceed to step 11:
7 goes into 40 5 times with a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 45972.14285
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.

Advancing to step 12:
If we divide 50 by 7, we get 7 and a remainder of 1.
The number 7 becomes the next digit in our result. 
Result so far: 45972.142857
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.

On to step 13:
7 can be fit into 10 1 times, resulting in a remainder of 3.
Put 1 as the next digit of the answer. 
Result so far: 45972.1428571
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.

Going ahead to step 14:
30 divided by 7 is 4 with a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 45972.14285714
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.

After the division, we end up with 45972.14285714 and a remainder of 2e-09.