We divide 437904 by 7
The aim is to understand the frequency of 7 in 437904.

Let's proceed to step 1:
The number 7 fits into 4 0 times, leaving a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Append the next digit (3) from the dividend to 4 and continue with: 43 / 7

On to step 2:
When dividing 43 by 7, we get 6 with a remainder of 1.
The next digit of our result is 6. 
Result so far: 6.0
If we take 42 away from 43, we end up with 1.
Include the next digit (7) from the dividend after 1, then repeat: 17 / 7

On to step 3:
7 can be fit into 17 2 times, resulting in a remainder of 3.
Write down 2 as next digit of the result. 
Result so far: 62.0
If we take 14 away from 17, we end up with 3.
Include the next digit (9) from the dividend after 3, then repeat: 39 / 7

Going ahead to step 4:
7 goes into 39 5 times with a remainder of 4.
The next digit of our result is 5. 
Result so far: 625.0
If we take 35 away from 39, we end up with 4.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 7

Step 5:
If we divide 40 by 7, we get 5 and a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 6255.0
If we subtract 35 from 40, we get 5.
Fetch the next digit (4) from the dividend, attach it to 5 and continue: 54 / 7

Let's proceed to step 6:
The number 7 fits into 54 7 times, leaving a remainder of 5.
Use 7 as the next digit of our solution. 
Result so far: 62557.0
Deduct 49 from 54 and we're left 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.

Let's proceed to step 7:
50 divided by 7 is 7 with a remainder of 1.
The next digit of our result is 7. 
Result so far: 62557.7
Subtract 49 from 50 to 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 8:
The number 7 fits into 10 1 times, leaving a remainder of 3.
Write down 1 as next digit of the result. 
Result so far: 62557.71
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.

Step 9:
When dividing 30 by 7, we get 4 with a remainder of 2.
Write down 4 as next digit of the result. 
Result so far: 62557.714
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 10:
When dividing 20 by 7, we get 2 with a remainder of 6.
Record the quotient 2 as the next digit in the result. 
Result so far: 62557.7142
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.

Moving on to step 11:
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: 62557.71428
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.

On to step 12:
If we divide 40 by 7, we get 5 and a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 62557.714285
Deduct 35 from 40 and we're left 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 13:
7 goes into 50 7 times with a remainder of 1.
Put 7 as the next digit of the answer. 
Result so far: 62557.7142857
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 14:
10 divided by 7 is 1 with a remainder of 3.
Write down 1 as next digit of the result. 
Result so far: 62557.71428571
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.

The final result is 62557.71428571 with a remainder of 3e-09.