We're dividing 524980 by 7 
The aim is to understand the frequency of 7 in 524980.

Moving on to step 1:
5 divided by 7 is 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Bring next digit (2) of the dividend behind the 5 and repeat the process: 52 / 7

Moving on to step 2:
The number 7 fits into 52 7 times, leaving a remainder of 3.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Deduct 49 from 52 and we're left with 3.
Grab the next digit (4) from the dividend, add it to 3, then carry on: 34 / 7

Moving on to step 3:
34 divided by 7 is 4 with a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 74.0
Deduct 28 from 34 and we're left with 6.
Grab the next digit (9) from the dividend, add it to 6, then carry on: 69 / 7

Moving on to step 4:
7 can be fit into 69 9 times, resulting in a remainder of 6.
Use 9 as the next digit of our solution. 
Result so far: 749.0
Subtract 63 from 69 to get 6.
Grab the next digit (8) from the dividend, add it to 6, then carry on: 68 / 7

Moving on to step 5:
If we divide 68 by 7, we get 9 and a remainder of 5.
Put 9 as the next digit of the answer. 
Result so far: 7499.0
Subtracting 63 from 68 leaves us with 5.
Include the next digit (0) from the dividend after 5, then repeat: 50 / 7

Let's proceed to step 6:
7 can be fit into 50 7 times, resulting in a remainder of 1.
The next digit of our result is 7. 
Result so far: 74997.0
If we take 49 away from 50, we end up 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 7:
7 can be fit into 10 1 times, resulting in a remainder of 3.
Put 1 as the next digit of the answer. 
Result so far: 74997.1
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.

Going ahead to step 8:
7 can be fit into 30 4 times, resulting in a remainder of 2.
Record the quotient 4 as the next digit in the result. 
Result so far: 74997.14
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 9:
20 divided by 7 is 2 with a remainder of 6.
Record the quotient 2 as the next digit in the result. 
Result so far: 74997.142
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.

Step 10:
The number 7 fits into 60 8 times, leaving a remainder of 4.
Put 8 as the next digit of the answer. 
Result so far: 74997.1428
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.

Advancing to step 11:
The number 7 fits into 40 5 times, leaving a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 74997.14285
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 12:
If we divide 50 by 7, we get 7 and a remainder of 1.
Use 7 as the next digit of our solution. 
Result so far: 74997.142857
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.

Moving on to step 13:
When dividing 10 by 7, we get 1 with a remainder of 3.
The next digit of our result is 1. 
Result so far: 74997.1428571
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 14:
30 divided by 7 is 4 with a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 74997.14285714
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.

The final outcome is 74997.14285714, with a leftover of 2e-09.