We look at the division of 973869 by 58 
The aim is to understand the frequency of 58 in 973869.

Going ahead to step 1:
The number 58 fits into 9 0 times, leaving a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Include the next digit (7) from the dividend after 9, then repeat: 97 / 58

Moving on to step 2:
The number 58 fits into 97 1 times, leaving a remainder of 39.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 58 away from 97, we end up with 39.
Grab the next digit (3) from the dividend, add it to 39, then carry on: 393 / 58

Advancing to step 3:
58 can be fit into 393 6 times, resulting in a remainder of 45.
Write down 6 as next digit of the result. 
Result so far: 16.0
If we take 348 away from 393, we end up with 45.
Take the next digit (8) from the dividend and append it to 45, then repeat: 458 / 58

Going ahead to step 4:
When dividing 458 by 58, we get 7 with a remainder of 52.
The number 7 becomes the next digit in our result. 
Result so far: 167.0
If we subtract 406 from 458, we get 52.
Bring next digit (6) of the dividend behind the 52 and repeat the process: 526 / 58

Moving on to step 5:
If we divide 526 by 58, we get 9 and a remainder of 4.
Write down 9 as next digit of the result. 
Result so far: 1679.0
Subtract 522 from 526 to get 4.
Append the next digit (9) from the dividend to 4 and continue with: 49 / 58

Advancing to step 6:
58 can be fit into 49 0 times, resulting in a remainder of 49.
Write down 0 as next digit of the result. 
Result so far: 16790.0
The remainder is 49 after subtracting 0 from 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Let's proceed to step 7:
490 divided by 58 is 8 with a remainder of 26.
Record the quotient 8 as the next digit in the result. 
Result so far: 16790.8
The remainder is 26 after subtracting 464 from 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Step 8:
When dividing 260 by 58, we get 4 with a remainder of 28.
The next digit of our result is 4. 
Result so far: 16790.84
Subtracting 232 from 260 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 9:
The number 58 fits into 280 4 times, leaving a remainder of 48.
Record the quotient 4 as the next digit in the result. 
Result so far: 16790.844
Subtract 232 from 280 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

The final outcome is 16790.844, with a leftover of 0.0048.