We're dividing 27315949 by 521 
The aim is to understand the frequency of 521 in 27315949.

Moving on to step 1:
521 goes into 2 0 times with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Take the next digit (7) from the dividend and append it to 2, then repeat: 27 / 521

Step 2:
The number 521 fits into 27 0 times, leaving a remainder of 27.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 27 leaves us with 27.
Grab the next digit (3) from the dividend, add it to 27, then carry on: 273 / 521

Step 3:
521 goes into 273 0 times with a remainder of 273.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 273, we get 273.
Take the next digit (1) from the dividend and append it to 273, then repeat: 2731 / 521

Going ahead to step 4:
If we divide 2731 by 521, we get 5 and a remainder of 126.
Put 5 as the next digit of the answer. 
Result so far: 5.0
Deduct 2605 from 2731 and we're left with 126.
Take the next digit (5) from the dividend and append it to 126, then repeat: 1265 / 521

Moving on to step 5:
521 goes into 1265 2 times with a remainder of 223.
The number 2 becomes the next digit in our result. 
Result so far: 52.0
If we subtract 1042 from 1265, we get 223.
Append the next digit (9) from the dividend to 223 and continue with: 2239 / 521

Moving on to step 6:
The number 521 fits into 2239 4 times, leaving a remainder of 155.
The next digit of our result is 4. 
Result so far: 524.0
The remainder is 155 after subtracting 2084 from 2239.
Append the next digit (4) from the dividend to 155 and continue with: 1554 / 521

On to step 7:
521 goes into 1554 2 times with a remainder of 512.
Record the quotient 2 as the next digit in the result. 
Result so far: 5242.0
The remainder is 512 after subtracting 1042 from 1554.
Fetch the next digit (9) from the dividend, attach it to 512 and continue: 5129 / 521

On to step 8:
When dividing 5129 by 521, we get 9 with a remainder of 440.
The number 9 becomes the next digit in our result. 
Result so far: 52429.0
Subtracting 4689 from 5129 leaves us with 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Step 9:
4400 divided by 521 is 8 with a remainder of 232.
Put 8 as the next digit of the answer. 
Result so far: 52429.8
If we subtract 4168 from 4400, we get 232.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2320, and continue the process.

Moving on to step 10:
When dividing 2320 by 521, we get 4 with a remainder of 236.
Write down 4 as next digit of the result. 
Result so far: 52429.84
Subtract 2084 from 2320 to get 236.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2360, and continue the process.

On to step 11:
521 can be fit into 2360 4 times, resulting in a remainder of 276.
The number 4 becomes the next digit in our result. 
Result so far: 52429.844
The remainder is 276 after subtracting 2084 from 2360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2760, and continue the process.

After the division, we end up with 52429.844 and a remainder of 0.0276.