67879959 divided by 503 
The aim is to understand the frequency of 503 in 67879959.

Let's proceed to step 1:
6 divided by 503 is 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Take the next digit (7) from the dividend and append it to 6, then repeat: 67 / 503

Moving on to step 2:
The number 503 fits into 67 0 times, leaving a remainder of 67.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 67, we end up with 67.
Fetch the next digit (8) from the dividend, attach it to 67 and continue: 678 / 503

On to step 3:
503 can be fit into 678 1 times, resulting in a remainder of 175.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 175 after subtracting 503 from 678.
Include the next digit (7) from the dividend after 175, then repeat: 1757 / 503

Going ahead to step 4:
1757 divided by 503 is 3 with a remainder of 248.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
If we take 1509 away from 1757, we end up with 248.
Include the next digit (9) from the dividend after 248, then repeat: 2489 / 503

Let's proceed to step 5:
503 can be fit into 2489 4 times, resulting in a remainder of 477.
Put 4 as the next digit of the answer. 
Result so far: 134.0
The remainder is 477 after subtracting 2012 from 2489.
Include the next digit (9) from the dividend after 477, then repeat: 4779 / 503

Moving on to step 6:
503 goes into 4779 9 times with a remainder of 252.
The number 9 becomes the next digit in our result. 
Result so far: 1349.0
Subtract 4527 from 4779 to get 252.
Bring next digit (5) of the dividend behind the 252 and repeat the process: 2525 / 503

Let's proceed to step 7:
2525 divided by 503 is 5 with a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 13495.0
Subtract 2515 from 2525 to get 10.
Take the next digit (9) from the dividend and append it to 10, then repeat: 109 / 503

Going ahead to step 8:
The number 503 fits into 109 0 times, leaving a remainder of 109.
The next digit of our result is 0. 
Result so far: 134950.0
If we subtract 0 from 109, we get 109.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1090, and continue the process.

Let's proceed to step 9:
When dividing 1090 by 503, we get 2 with a remainder of 84.
Write down 2 as next digit of the result. 
Result so far: 134950.2
The remainder is 84 after subtracting 1006 from 1090.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Let's proceed to step 10:
When dividing 840 by 503, we get 1 with a remainder of 337.
Write down 1 as next digit of the result. 
Result so far: 134950.21
Subtracting 503 from 840 leaves us with 337.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3370, and continue the process.

Going ahead to step 11:
503 can be fit into 3370 6 times, resulting in a remainder of 352.
Put 6 as the next digit of the answer. 
Result so far: 134950.216
If we subtract 3018 from 3370, we get 352.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

On to step 12:
The number 503 fits into 3520 6 times, leaving a remainder of 502.
Record the quotient 6 as the next digit in the result. 
Result so far: 134950.2166
Subtracting 3018 from 3520 leaves us with 502.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5020, and continue the process.

The final result is 134950.2166 with a remainder of 0.00502.