We look at the division of 1551789 by 458 
The aim is to understand the frequency of 458 in 1551789.

Going ahead to step 1:
The number 458 fits into 1 0 times, leaving a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (5) from the dividend, add it to 1, then carry on: 15 / 458

Going ahead to step 2:
15 divided by 458 is 0 with a remainder of 15.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 15 leaves us with 15.
Include the next digit (5) from the dividend after 15, then repeat: 155 / 458

Let's proceed to step 3:
The number 458 fits into 155 0 times, leaving a remainder of 155.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 155 to get 155.
Fetch the next digit (1) from the dividend, attach it to 155 and continue: 1551 / 458

Step 4:
When dividing 1551 by 458, we get 3 with a remainder of 177.
The next digit of our result is 3. 
Result so far: 3.0
If we subtract 1374 from 1551, we get 177.
Bring next digit (7) of the dividend behind the 177 and repeat the process: 1777 / 458

Moving on to step 5:
When dividing 1777 by 458, we get 3 with a remainder of 403.
Use 3 as the next digit of our solution. 
Result so far: 33.0
Subtracting 1374 from 1777 leaves us with 403.
Take the next digit (8) from the dividend and append it to 403, then repeat: 4038 / 458

Advancing to step 6:
4038 divided by 458 is 8 with a remainder of 374.
The next digit of our result is 8. 
Result so far: 338.0
If we take 3664 away from 4038, we end up with 374.
Bring next digit (9) of the dividend behind the 374 and repeat the process: 3749 / 458

Advancing to step 7:
458 goes into 3749 8 times with a remainder of 85.
Put 8 as the next digit of the answer. 
Result so far: 3388.0
If we take 3664 away from 3749, we end up with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Advancing to step 8:
When dividing 850 by 458, we get 1 with a remainder of 392.
Record the quotient 1 as the next digit in the result. 
Result so far: 3388.1
If we take 458 away from 850, we end up with 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Let's proceed to step 9:
When dividing 3920 by 458, we get 8 with a remainder of 256.
Record the quotient 8 as the next digit in the result. 
Result so far: 3388.18
Subtract 3664 from 3920 to get 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

Let's proceed to step 10:
458 goes into 2560 5 times with a remainder of 270.
Write down 5 as next digit of the result. 
Result so far: 3388.185
The remainder is 270 after subtracting 2290 from 2560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Step 11:
When dividing 2700 by 458, we get 5 with a remainder of 410.
Use 5 as the next digit of our solution. 
Result so far: 3388.1855
If we take 2290 away from 2700, we end up with 410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4100, and continue the process.

The final outcome is 3388.1855, with a leftover of 0.0041.