We divide 66709191 by 58
The aim is to understand the frequency of 58 in 66709191.

Let's proceed to step 1:
6 divided by 58 is 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 58

Advancing to step 2:
58 can be fit into 66 1 times, resulting in a remainder of 8.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 58 from 66 to get 8.
Append the next digit (7) from the dividend to 8 and continue with: 87 / 58

Let's proceed to step 3:
58 goes into 87 1 times with a remainder of 29.
Use 1 as the next digit of our solution. 
Result so far: 11.0
If we take 58 away from 87, we end up with 29.
Fetch the next digit (0) from the dividend, attach it to 29 and continue: 290 / 58

Step 4:
If we divide 290 by 58, we get 5 and a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 115.0
If we take 290 away from 290, we end up with 0.
Fetch the next digit (9) from the dividend, attach it to 0 and continue: 9 / 58

Advancing to step 5:
When dividing 9 by 58, we get 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 1150.0
If we subtract 0 from 9, we get 9.
Grab the next digit (1) from the dividend, add it to 9, then carry on: 91 / 58

Going ahead to step 6:
91 divided by 58 is 1 with a remainder of 33.
Use 1 as the next digit of our solution. 
Result so far: 11501.0
If we take 58 away from 91, we end up with 33.
Append the next digit (9) from the dividend to 33 and continue with: 339 / 58

Advancing to step 7:
When dividing 339 by 58, we get 5 with a remainder of 49.
Use 5 as the next digit of our solution. 
Result so far: 115015.0
Subtracting 290 from 339 leaves us with 49.
Fetch the next digit (1) from the dividend, attach it to 49 and continue: 491 / 58

Let's proceed to step 8:
491 divided by 58 is 8 with a remainder of 27.
The next digit of our result is 8. 
Result so far: 1150158.0
Subtracting 464 from 491 leaves us with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Going ahead to step 9:
58 goes into 270 4 times with a remainder of 38.
Use 4 as the next digit of our solution. 
Result so far: 1150158.4
If we take 232 away from 270, we end up with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 10:
The number 58 fits into 380 6 times, leaving a remainder of 32.
Write down 6 as next digit of the result. 
Result so far: 1150158.46
If we take 348 away from 380, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Moving on to step 11:
When dividing 320 by 58, we get 5 with a remainder of 30.
The next digit of our result is 5. 
Result so far: 1150158.465
If we subtract 290 from 320, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 12:
58 can be fit into 300 5 times, resulting in a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 1150158.4655
Subtracting 290 from 300 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final result is 1150158.4655 with a remainder of 0.0001.