75125320 divided by 551 
The aim is to understand the frequency of 551 in 75125320.

Let's proceed to step 1:
If we divide 7 by 551, we get 0 and a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Bring next digit (5) of the dividend behind the 7 and repeat the process: 75 / 551

On to step 2:
The number 551 fits into 75 0 times, leaving a remainder of 75.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 75 leaves us with 75.
Fetch the next digit (1) from the dividend, attach it to 75 and continue: 751 / 551

Moving on to step 3:
The number 551 fits into 751 1 times, leaving a remainder of 200.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 551 from 751 to get 200.
Fetch the next digit (2) from the dividend, attach it to 200 and continue: 2002 / 551

Advancing to step 4:
When dividing 2002 by 551, we get 3 with a remainder of 349.
The next digit of our result is 3. 
Result so far: 13.0
Subtract 1653 from 2002 to get 349.
Take the next digit (5) from the dividend and append it to 349, then repeat: 3495 / 551

Advancing to step 5:
551 goes into 3495 6 times with a remainder of 189.
Put 6 as the next digit of the answer. 
Result so far: 136.0
Subtract 3306 from 3495 to get 189.
Fetch the next digit (3) from the dividend, attach it to 189 and continue: 1893 / 551

Going ahead to step 6:
When dividing 1893 by 551, we get 3 with a remainder of 240.
The number 3 becomes the next digit in our result. 
Result so far: 1363.0
The remainder is 240 after subtracting 1653 from 1893.
Append the next digit (2) from the dividend to 240 and continue with: 2402 / 551

Advancing to step 7:
551 can be fit into 2402 4 times, resulting in a remainder of 198.
Write down 4 as next digit of the result. 
Result so far: 13634.0
The remainder is 198 after subtracting 2204 from 2402.
Include the next digit (0) from the dividend after 198, then repeat: 1980 / 551

Going ahead to step 8:
When dividing 1980 by 551, we get 3 with a remainder of 327.
The number 3 becomes the next digit in our result. 
Result so far: 136343.0
Subtract 1653 from 1980 to get 327.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3270, and continue the process.

Advancing to step 9:
The number 551 fits into 3270 5 times, leaving a remainder of 515.
Record the quotient 5 as the next digit in the result. 
Result so far: 136343.5
The remainder is 515 after subtracting 2755 from 3270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5150, and continue the process.

Advancing to step 10:
551 can be fit into 5150 9 times, resulting in a remainder of 191.
The next digit of our result is 9. 
Result so far: 136343.59
Subtract 4959 from 5150 to get 191.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1910, and continue the process.

Moving on to step 11:
When dividing 1910 by 551, we get 3 with a remainder of 257.
Use 3 as the next digit of our solution. 
Result so far: 136343.593
If we subtract 1653 from 1910, we get 257.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2570, and continue the process.

Advancing to step 12:
When dividing 2570 by 551, we get 4 with a remainder of 366.
Record the quotient 4 as the next digit in the result. 
Result so far: 136343.5934
Subtracting 2204 from 2570 leaves us with 366.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3660, and continue the process.

Going ahead to step 13:
3660 divided by 551 is 6 with a remainder of 354.
Write down 6 as next digit of the result. 
Result so far: 136343.59346
If we take 3306 away from 3660, we end up with 354.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3540, and continue the process.

Let's proceed to step 14:
551 goes into 3540 6 times with a remainder of 234.
The next digit of our result is 6. 
Result so far: 136343.593466
The remainder is 234 after subtracting 3306 from 3540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2340, and continue the process.

The final outcome is 136343.593466, with a leftover of 2.34e-05.