52750721 ÷ 251 
The aim is to understand the frequency of 251 in 52750721.

Going ahead to step 1:
If we divide 5 by 251, we get 0 and a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Fetch the next digit (2) from the dividend, attach it to 5 and continue: 52 / 251

Going ahead to step 2:
When dividing 52 by 251, we get 0 with a remainder of 52.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 52 and we're left with 52.
Grab the next digit (7) from the dividend, add it to 52, then carry on: 527 / 251

Let's proceed to step 3:
The number 251 fits into 527 2 times, leaving a remainder of 25.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 25 after subtracting 502 from 527.
Grab the next digit (5) from the dividend, add it to 25, then carry on: 255 / 251

On to step 4:
251 goes into 255 1 times with a remainder of 4.
The next digit of our result is 1. 
Result so far: 21.0
Subtracting 251 from 255 leaves us with 4.
Bring next digit (0) of the dividend behind the 4 and repeat the process: 40 / 251

Going ahead to step 5:
When dividing 40 by 251, we get 0 with a remainder of 40.
The next digit of our result is 0. 
Result so far: 210.0
If we take 0 away from 40, we end up with 40.
Grab the next digit (7) from the dividend, add it to 40, then carry on: 407 / 251

Let's proceed to step 6:
The number 251 fits into 407 1 times, leaving a remainder of 156.
Put 1 as the next digit of the answer. 
Result so far: 2101.0
The remainder is 156 after subtracting 251 from 407.
Bring next digit (2) of the dividend behind the 156 and repeat the process: 1562 / 251

Let's proceed to step 7:
251 can be fit into 1562 6 times, resulting in a remainder of 56.
Use 6 as the next digit of our solution. 
Result so far: 21016.0
If we subtract 1506 from 1562, we get 56.
Fetch the next digit (1) from the dividend, attach it to 56 and continue: 561 / 251

Let's proceed to step 8:
561 divided by 251 is 2 with a remainder of 59.
Use 2 as the next digit of our solution. 
Result so far: 210162.0
If we subtract 502 from 561, we get 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Moving on to step 9:
251 can be fit into 590 2 times, resulting in a remainder of 88.
Use 2 as the next digit of our solution. 
Result so far: 210162.2
If we take 502 away from 590, we end up with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Let's proceed to step 10:
880 divided by 251 is 3 with a remainder of 127.
Use 3 as the next digit of our solution. 
Result so far: 210162.23
If we subtract 753 from 880, we get 127.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1270, and continue the process.

Step 11:
251 can be fit into 1270 5 times, resulting in a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 210162.235
If we take 1255 away from 1270, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 12:
The number 251 fits into 150 0 times, leaving a remainder of 150.
The number 0 becomes the next digit in our result. 
Result so far: 210162.235
Subtracting 0 from 150 leaves us with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Step 13:
The number 251 fits into 1500 5 times, leaving a remainder of 245.
Put 5 as the next digit of the answer. 
Result so far: 210162.23505
If we take 1255 away from 1500, we end up with 245.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2450, and continue the process.

Let's proceed to step 14:
251 can be fit into 2450 9 times, resulting in a remainder of 191.
The next digit of our result is 9. 
Result so far: 210162.235059
Deduct 2259 from 2450 and we're left with 191.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1910, and continue the process.

On to step 15:
When dividing 1910 by 251, we get 7 with a remainder of 153.
Put 7 as the next digit of the answer. 
Result so far: 210162.2350597
If we take 1757 away from 1910, we end up with 153.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1530, and continue the process.

Step 16:
The number 251 fits into 1530 6 times, leaving a remainder of 24.
The number 6 becomes the next digit in our result. 
Result so far: 210162.23505976
Deduct 1506 from 1530 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

In conclusion, the division gives 210162.23505976 with a balance of 2.4e-08.