We're dividing 385104 by 7 
The aim is to understand the frequency of 7 in 385104.

Step 1:
If we divide 3 by 7, we get 0 and a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Bring next digit (8) of the dividend behind the 3 and repeat the process: 38 / 7

Moving on to step 2:
When dividing 38 by 7, we get 5 with a remainder of 3.
The next digit of our result is 5. 
Result so far: 5.0
If we take 35 away from 38, we end up with 3.
Take the next digit (5) from the dividend and append it to 3, then repeat: 35 / 7

Advancing to step 3:
7 goes into 35 5 times with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 55.0
If we subtract 35 from 35, we get 0.
Append the next digit (1) from the dividend to 0 and continue with: 1 / 7

Advancing to step 4:
7 goes into 1 0 times with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 550.0
Deduct 0 from 1 and we're left with 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 7

Going ahead to step 5:
When dividing 10 by 7, we get 1 with a remainder of 3.
Put 1 as the next digit of the answer. 
Result so far: 5501.0
The remainder is 3 after subtracting 7 from 10.
Bring next digit (4) of the dividend behind the 3 and repeat the process: 34 / 7

Going ahead to step 6:
When dividing 34 by 7, we get 4 with a remainder of 6.
Use 4 as the next digit of our solution. 
Result so far: 55014.0
The remainder is 6 after subtracting 28 from 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 7:
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: 55014.8
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.

On to step 8:
40 divided by 7 is 5 with a remainder of 5.
The next digit of our result is 5. 
Result so far: 55014.85
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.

On to step 9:
7 goes into 50 7 times with a remainder of 1.
Write down 7 as next digit of the result. 
Result so far: 55014.857
Deduct 49 from 50 and we're left 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.

On to step 10:
If we divide 10 by 7, we get 1 and a remainder of 3.
Write down 1 as next digit of the result. 
Result so far: 55014.8571
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.

Advancing to step 11:
30 divided by 7 is 4 with a remainder of 2.
Write down 4 as next digit of the result. 
Result so far: 55014.85714
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.

Advancing to step 12:
20 divided by 7 is 2 with a remainder of 6.
The number 2 becomes the next digit in our result. 
Result so far: 55014.857142
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.

Step 13:
60 divided by 7 is 8 with a remainder of 4.
Record the quotient 8 as the next digit in the result. 
Result so far: 55014.8571428
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.

Going ahead to step 14:
When dividing 40 by 7, we get 5 with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 55014.85714285
If we subtract 35 from 40, we 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.

The final outcome is 55014.85714285, with a leftover of 5e-09.