656399 ÷ 7 
The aim is to understand the frequency of 7 in 656399.

Advancing to step 1:
6 divided by 7 is 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Fetch the next digit (5) from the dividend, attach it to 6 and continue: 65 / 7

Advancing to step 2:
7 can be fit into 65 9 times, resulting in a remainder of 2.
The next digit of our result is 9. 
Result so far: 9.0
If we take 63 away from 65, we end up with 2.
Bring next digit (6) of the dividend behind the 2 and repeat the process: 26 / 7

Moving on to step 3:
If we divide 26 by 7, we get 3 and a remainder of 5.
Put 3 as the next digit of the answer. 
Result so far: 93.0
Subtract 21 from 26 to get 5.
Grab the next digit (3) from the dividend, add it to 5, then carry on: 53 / 7

Let's proceed to step 4:
If we divide 53 by 7, we get 7 and a remainder of 4.
Use 7 as the next digit of our solution. 
Result so far: 937.0
Deduct 49 from 53 and we're left with 4.
Bring next digit (9) of the dividend behind the 4 and repeat the process: 49 / 7

On to step 5:
If we divide 49 by 7, we get 7 and a remainder of 0.
Use 7 as the next digit of our solution. 
Result so far: 9377.0
The remainder is 0 after subtracting 49 from 49.
Take the next digit (9) from the dividend and append it to 0, then repeat: 9 / 7

On to step 6:
When dividing 9 by 7, we get 1 with a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 93771.0
If we take 7 away from 9, 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.

Going ahead to step 7:
When dividing 20 by 7, we get 2 with a remainder of 6.
Write down 2 as next digit of the result. 
Result so far: 93771.2
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.

Moving on to step 8:
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: 93771.28
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.

Going ahead to step 9:
7 goes into 40 5 times with a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 93771.285
Subtract 35 from 40 to get 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 10:
If we divide 50 by 7, we get 7 and a remainder of 1.
Record the quotient 7 as the next digit in the result. 
Result so far: 93771.2857
Subtracting 49 from 50 leaves us 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.

Going ahead to step 11:
If we divide 10 by 7, we get 1 and a remainder of 3.
The next digit of our result is 1. 
Result so far: 93771.28571
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.

Advancing to step 12:
When dividing 30 by 7, we get 4 with a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 93771.285714
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 13:
The number 7 fits into 20 2 times, leaving a remainder of 6.
The number 2 becomes the next digit in our result. 
Result so far: 93771.2857142
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.

Advancing to step 14:
7 can be fit into 60 8 times, resulting in a remainder of 4.
Put 8 as the next digit of the answer. 
Result so far: 93771.28571428
Subtract 56 from 60 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The final result is 93771.28571428 with a remainder of 4e-09.