42192520 divided by 813 
The aim is to understand the frequency of 813 in 42192520.

Moving on to step 1:
4 divided by 813 is 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Include the next digit (2) from the dividend after 4, then repeat: 42 / 813

Let's proceed to step 2:
When dividing 42 by 813, we get 0 with a remainder of 42.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 42 leaves us with 42.
Fetch the next digit (1) from the dividend, attach it to 42 and continue: 421 / 813

Let's proceed to step 3:
When dividing 421 by 813, we get 0 with a remainder of 421.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 421, we get 421.
Grab the next digit (9) from the dividend, add it to 421, then carry on: 4219 / 813

Moving on to step 4:
If we divide 4219 by 813, we get 5 and a remainder of 154.
Write down 5 as next digit of the result. 
Result so far: 5.0
If we take 4065 away from 4219, we end up with 154.
Fetch the next digit (2) from the dividend, attach it to 154 and continue: 1542 / 813

Let's proceed to step 5:
813 goes into 1542 1 times with a remainder of 729.
Record the quotient 1 as the next digit in the result. 
Result so far: 51.0
Subtracting 813 from 1542 leaves us with 729.
Fetch the next digit (5) from the dividend, attach it to 729 and continue: 7295 / 813

Step 6:
The number 813 fits into 7295 8 times, leaving a remainder of 791.
Put 8 as the next digit of the answer. 
Result so far: 518.0
If we subtract 6504 from 7295, we get 791.
Append the next digit (2) from the dividend to 791 and continue with: 7912 / 813

On to step 7:
7912 divided by 813 is 9 with a remainder of 595.
Put 9 as the next digit of the answer. 
Result so far: 5189.0
Subtracting 7317 from 7912 leaves us with 595.
Fetch the next digit (0) from the dividend, attach it to 595 and continue: 5950 / 813

Going ahead to step 8:
813 can be fit into 5950 7 times, resulting in a remainder of 259.
The next digit of our result is 7. 
Result so far: 51897.0
Subtracting 5691 from 5950 leaves us with 259.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2590, and continue the process.

Going ahead to step 9:
If we divide 2590 by 813, we get 3 and a remainder of 151.
Put 3 as the next digit of the answer. 
Result so far: 51897.3
Subtracting 2439 from 2590 leaves us with 151.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1510, and continue the process.

Advancing to step 10:
The number 813 fits into 1510 1 times, leaving a remainder of 697.
The next digit of our result is 1. 
Result so far: 51897.31
Subtracting 813 from 1510 leaves us with 697.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6970, and continue the process.

Step 11:
If we divide 6970 by 813, we get 8 and a remainder of 466.
Write down 8 as next digit of the result. 
Result so far: 51897.318
If we take 6504 away from 6970, we end up with 466.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4660, and continue the process.

On to step 12:
813 goes into 4660 5 times with a remainder of 595.
Put 5 as the next digit of the answer. 
Result so far: 51897.3185
The remainder is 595 after subtracting 4065 from 4660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5950, and continue the process.

Let's proceed to step 13:
When dividing 5950 by 813, we get 7 with a remainder of 259.
The next digit of our result is 7. 
Result so far: 51897.31857
If we subtract 5691 from 5950, we get 259.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2590, and continue the process.

Going ahead to step 14:
813 goes into 2590 3 times with a remainder of 151.
Write down 3 as next digit of the result. 
Result so far: 51897.318573
Subtract 2439 from 2590 to get 151.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1510, and continue the process.

Let's proceed to step 15:
When dividing 1510 by 813, we get 1 with a remainder of 697.
Put 1 as the next digit of the answer. 
Result so far: 51897.3185731
Subtract 813 from 1510 to get 697.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6970, and continue the process.

Advancing to step 16:
813 goes into 6970 8 times with a remainder of 466.
The next digit of our result is 8. 
Result so far: 51897.31857318
Deduct 6504 from 6970 and we're left with 466.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4660, and continue the process.

The final result is 51897.31857318 with a remainder of 4.66e-07.