19580023 divided by 815 
The aim is to understand the frequency of 815 in 19580023.

Going ahead to step 1:
If we divide 1 by 815, we get 0 and a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (9) from the dividend, add it to 1, then carry on: 19 / 815

Going ahead to step 2:
If we divide 19 by 815, we get 0 and a remainder of 19.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 19 and we're left with 19.
Append the next digit (5) from the dividend to 19 and continue with: 195 / 815

Advancing to step 3:
If we divide 195 by 815, we get 0 and a remainder of 195.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 195 leaves us with 195.
Take the next digit (8) from the dividend and append it to 195, then repeat: 1958 / 815

Let's proceed to step 4:
If we divide 1958 by 815, we get 2 and a remainder of 328.
The next digit of our result is 2. 
Result so far: 2.0
Subtract 1630 from 1958 to get 328.
Fetch the next digit (0) from the dividend, attach it to 328 and continue: 3280 / 815

Step 5:
When dividing 3280 by 815, we get 4 with a remainder of 20.
The next digit of our result is 4. 
Result so far: 24.0
Deduct 3260 from 3280 and we're left with 20.
Grab the next digit (0) from the dividend, add it to 20, then carry on: 200 / 815

Going ahead to step 6:
If we divide 200 by 815, we get 0 and a remainder of 200.
Record the quotient 0 as the next digit in the result. 
Result so far: 240.0
The remainder is 200 after subtracting 0 from 200.
Include the next digit (2) from the dividend after 200, then repeat: 2002 / 815

Let's proceed to step 7:
The number 815 fits into 2002 2 times, leaving a remainder of 372.
Use 2 as the next digit of our solution. 
Result so far: 2402.0
If we subtract 1630 from 2002, we get 372.
Append the next digit (3) from the dividend to 372 and continue with: 3723 / 815

On to step 8:
When dividing 3723 by 815, we get 4 with a remainder of 463.
Use 4 as the next digit of our solution. 
Result so far: 24024.0
The remainder is 463 after subtracting 3260 from 3723.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4630, and continue the process.

Moving on to step 9:
815 goes into 4630 5 times with a remainder of 555.
The next digit of our result is 5. 
Result so far: 24024.5
The remainder is 555 after subtracting 4075 from 4630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5550, and continue the process.

Let's proceed to step 10:
815 goes into 5550 6 times with a remainder of 660.
Write down 6 as next digit of the result. 
Result so far: 24024.56
If we take 4890 away from 5550, we end up with 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6600, and continue the process.

Moving on to step 11:
815 goes into 6600 8 times with a remainder of 80.
Use 8 as the next digit of our solution. 
Result so far: 24024.568
If we take 6520 away from 6600, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 12:
800 divided by 815 is 0 with a remainder of 800.
The next digit of our result is 0. 
Result so far: 24024.568
Subtracting 0 from 800 leaves us with 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8000, and continue the process.

Let's proceed to step 13:
815 goes into 8000 9 times with a remainder of 665.
Write down 9 as next digit of the result. 
Result so far: 24024.56809
Deduct 7335 from 8000 and we're left with 665.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6650, and continue the process.

Going ahead to step 14:
815 goes into 6650 8 times with a remainder of 130.
Use 8 as the next digit of our solution. 
Result so far: 24024.568098
If we subtract 6520 from 6650, we get 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Let's proceed to step 15:
The number 815 fits into 1300 1 times, leaving a remainder of 485.
The number 1 becomes the next digit in our result. 
Result so far: 24024.5680981
The remainder is 485 after subtracting 815 from 1300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4850, and continue the process.

Step 16:
If we divide 4850 by 815, we get 5 and a remainder of 775.
Record the quotient 5 as the next digit in the result. 
Result so far: 24024.56809815
Deduct 4075 from 4850 and we're left with 775.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7750, and continue the process.

The quotient of the division is 24024.56809815, and the remainder is 7.75e-07.