We're dividing 487303 by 7 
The aim is to understand the frequency of 7 in 487303.

Let's proceed to step 1:
7 goes into 4 0 times with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Include the next digit (8) from the dividend after 4, then repeat: 48 / 7

On to step 2:
7 goes into 48 6 times with a remainder of 6.
Put 6 as the next digit of the answer. 
Result so far: 6.0
If we subtract 42 from 48, we get 6.
Grab the next digit (7) from the dividend, add it to 6, then carry on: 67 / 7

Let's proceed to step 3:
7 goes into 67 9 times with a remainder of 4.
Put 9 as the next digit of the answer. 
Result so far: 69.0
If we subtract 63 from 67, we get 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 7

Moving on to step 4:
If we divide 43 by 7, we get 6 and a remainder of 1.
The next digit of our result is 6. 
Result so far: 696.0
The remainder is 1 after subtracting 42 from 43.
Include the next digit (0) from the dividend after 1, then repeat: 10 / 7

Advancing to step 5:
The number 7 fits into 10 1 times, leaving a remainder of 3.
The next digit of our result is 1. 
Result so far: 6961.0
Deduct 7 from 10 and we're left with 3.
Include the next digit (3) from the dividend after 3, then repeat: 33 / 7

Advancing to step 6:
7 goes into 33 4 times with a remainder of 5.
Use 4 as the next digit of our solution. 
Result so far: 69614.0
If we take 28 away from 33, 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 7:
When dividing 50 by 7, we get 7 with a remainder of 1.
Use 7 as the next digit of our solution. 
Result so far: 69614.7
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.

Moving on to step 8:
The number 7 fits into 10 1 times, leaving a remainder of 3.
The number 1 becomes the next digit in our result. 
Result so far: 69614.71
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.

Let's proceed to step 9:
The number 7 fits into 30 4 times, leaving a remainder of 2.
Record the quotient 4 as the next digit in the result. 
Result so far: 69614.714
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.

On to step 10:
When dividing 20 by 7, we get 2 with a remainder of 6.
Put 2 as the next digit of the answer. 
Result so far: 69614.7142
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.

On to step 11:
7 can be fit into 60 8 times, resulting in a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 69614.71428
Subtracting 56 from 60 leaves us 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.

Moving on to step 12:
If we divide 40 by 7, we get 5 and a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 69614.714285
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.

Step 13:
7 can be fit into 50 7 times, resulting in a remainder of 1.
Record the quotient 7 as the next digit in the result. 
Result so far: 69614.7142857
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.

Moving on to step 14:
10 divided by 7 is 1 with a remainder of 3.
The next digit of our result is 1. 
Result so far: 69614.71428571
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.

The final outcome is 69614.71428571, with a leftover of 3e-09.