521925 divided by 79 
The aim is to understand the frequency of 79 in 521925.

On to step 1:
The number 79 fits into 5 0 times, leaving a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Bring next digit (2) of the dividend behind the 5 and repeat the process: 52 / 79

Advancing to step 2:
52 divided by 79 is 0 with a remainder of 52.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 52, we end up with 52.
Fetch the next digit (1) from the dividend, attach it to 52 and continue: 521 / 79

Moving on to step 3:
The number 79 fits into 521 6 times, leaving a remainder of 47.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Subtracting 474 from 521 leaves us with 47.
Append the next digit (9) from the dividend to 47 and continue with: 479 / 79

Moving on to step 4:
79 can be fit into 479 6 times, resulting in a remainder of 5.
The next digit of our result is 6. 
Result so far: 66.0
If we subtract 474 from 479, we get 5.
Append the next digit (2) from the dividend to 5 and continue with: 52 / 79

Going ahead to step 5:
79 goes into 52 0 times with a remainder of 52.
Record the quotient 0 as the next digit in the result. 
Result so far: 660.0
The remainder is 52 after subtracting 0 from 52.
Append the next digit (5) from the dividend to 52 and continue with: 525 / 79

Let's proceed to step 6:
The number 79 fits into 525 6 times, leaving a remainder of 51.
Record the quotient 6 as the next digit in the result. 
Result so far: 6606.0
If we take 474 away from 525, we end up with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Let's proceed to step 7:
When dividing 510 by 79, we get 6 with a remainder of 36.
Put 6 as the next digit of the answer. 
Result so far: 6606.6
If we take 474 away from 510, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 8:
The number 79 fits into 360 4 times, leaving a remainder of 44.
Record the quotient 4 as the next digit in the result. 
Result so far: 6606.64
Deduct 316 from 360 and we're left with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Advancing to step 9:
When dividing 440 by 79, we get 5 with a remainder of 45.
Put 5 as the next digit of the answer. 
Result so far: 6606.645
Subtracting 395 from 440 leaves us with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

On to step 10:
450 divided by 79 is 5 with a remainder of 55.
The next digit of our result is 5. 
Result so far: 6606.6455
Subtracting 395 from 450 leaves us with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

The final outcome is 6606.6455, with a leftover of 0.00055.