We're dividing 780223 by 7 
The aim is to understand the frequency of 7 in 780223.

Going ahead to step 1:
The number 7 fits into 7 1 times, leaving a remainder of 0.
The next digit of our result is 1. 
Result so far: 1.0
If we take 7 away from 7, we end up with 0.
Grab the next digit (8) from the dividend, add it to 0, then carry on: 8 / 7

Step 2:
When dividing 8 by 7, we get 1 with a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 11.0
Deduct 7 from 8 and we're left with 1.
Include the next digit (0) from the dividend after 1, then repeat: 10 / 7

Advancing to step 3:
The number 7 fits into 10 1 times, leaving a remainder of 3.
Record the quotient 1 as the next digit in the result. 
Result so far: 111.0
Subtracting 7 from 10 leaves us with 3.
Take the next digit (2) from the dividend and append it to 3, then repeat: 32 / 7

Let's proceed to step 4:
If we divide 32 by 7, we get 4 and a remainder of 4.
The next digit of our result is 4. 
Result so far: 1114.0
Subtracting 28 from 32 leaves us with 4.
Bring next digit (2) of the dividend behind the 4 and repeat the process: 42 / 7

Advancing to step 5:
If we divide 42 by 7, we get 6 and a remainder of 0.
Record the quotient 6 as the next digit in the result. 
Result so far: 11146.0
The remainder is 0 after subtracting 42 from 42.
Bring next digit (3) of the dividend behind the 0 and repeat the process: 3 / 7

Step 6:
When dividing 3 by 7, we get 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 111460.0
Deduct 0 from 3 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.

Step 7:
7 goes into 30 4 times with a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 111460.4
If we subtract 28 from 30, we get 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 8:
When dividing 20 by 7, we get 2 with a remainder of 6.
The next digit of our result is 2. 
Result so far: 111460.42
The remainder is 6 after subtracting 14 from 20.
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 9:
If we divide 60 by 7, we get 8 and a remainder of 4.
Record the quotient 8 as the next digit in the result. 
Result so far: 111460.428
The remainder is 4 after subtracting 56 from 60.
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:
If we divide 40 by 7, we get 5 and a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 111460.4285
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.

On to step 11:
50 divided by 7 is 7 with a remainder of 1.
Record the quotient 7 as the next digit in the result. 
Result so far: 111460.42857
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.

On to step 12:
If we divide 10 by 7, we get 1 and a remainder of 3.
Use 1 as the next digit of our solution. 
Result so far: 111460.428571
Deduct 7 from 10 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.

Advancing to step 13:
The number 7 fits into 30 4 times, leaving a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 111460.4285714
If we subtract 28 from 30, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 14:
The number 7 fits into 20 2 times, leaving a remainder of 6.
Put 2 as the next digit of the answer. 
Result so far: 111460.42857142
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.

In conclusion, the division gives 111460.42857142 with a balance of 6e-09.