Let's divide 856821 by 58
The aim is to understand the frequency of 58 in 856821.

Advancing to step 1:
58 goes into 8 0 times with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Append the next digit (5) from the dividend to 8 and continue with: 85 / 58

Step 2:
The number 58 fits into 85 1 times, leaving a remainder of 27.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 58 away from 85, we end up with 27.
Take the next digit (6) from the dividend and append it to 27, then repeat: 276 / 58

Let's proceed to step 3:
The number 58 fits into 276 4 times, leaving a remainder of 44.
The next digit of our result is 4. 
Result so far: 14.0
Deduct 232 from 276 and we're left with 44.
Grab the next digit (8) from the dividend, add it to 44, then carry on: 448 / 58

Advancing to step 4:
When dividing 448 by 58, we get 7 with a remainder of 42.
Write down 7 as next digit of the result. 
Result so far: 147.0
Subtracting 406 from 448 leaves us with 42.
Fetch the next digit (2) from the dividend, attach it to 42 and continue: 422 / 58

Step 5:
The number 58 fits into 422 7 times, leaving a remainder of 16.
The next digit of our result is 7. 
Result so far: 1477.0
The remainder is 16 after subtracting 406 from 422.
Take the next digit (1) from the dividend and append it to 16, then repeat: 161 / 58

Let's proceed to step 6:
If we divide 161 by 58, we get 2 and a remainder of 45.
The next digit of our result is 2. 
Result so far: 14772.0
If we subtract 116 from 161, we get 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 7:
450 divided by 58 is 7 with a remainder of 44.
Record the quotient 7 as the next digit in the result. 
Result so far: 14772.7
The remainder is 44 after subtracting 406 from 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Going ahead to step 8:
If we divide 440 by 58, we get 7 and a remainder of 34.
The number 7 becomes the next digit in our result. 
Result so far: 14772.77
Deduct 406 from 440 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

The final outcome is 14772.77, with a leftover of 0.034.