We're dividing 811933 by 42 
The aim is to understand the frequency of 42 in 811933.

Advancing to step 1:
The number 42 fits into 8 0 times, leaving a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 42

Advancing to step 2:
If we divide 81 by 42, we get 1 and a remainder of 39.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 42 from 81 and we're left with 39.
Bring next digit (1) of the dividend behind the 39 and repeat the process: 391 / 42

Going ahead to step 3:
If we divide 391 by 42, we get 9 and a remainder of 13.
Record the quotient 9 as the next digit in the result. 
Result so far: 19.0
If we take 378 away from 391, we end up with 13.
Grab the next digit (9) from the dividend, add it to 13, then carry on: 139 / 42

Going ahead to step 4:
42 goes into 139 3 times with a remainder of 13.
The number 3 becomes the next digit in our result. 
Result so far: 193.0
Subtract 126 from 139 to get 13.
Fetch the next digit (3) from the dividend, attach it to 13 and continue: 133 / 42

Moving on to step 5:
When dividing 133 by 42, we get 3 with a remainder of 7.
The next digit of our result is 3. 
Result so far: 1933.0
The remainder is 7 after subtracting 126 from 133.
Fetch the next digit (3) from the dividend, attach it to 7 and continue: 73 / 42

Step 6:
The number 42 fits into 73 1 times, leaving a remainder of 31.
Record the quotient 1 as the next digit in the result. 
Result so far: 19331.0
Subtract 42 from 73 to get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

On to step 7:
42 can be fit into 310 7 times, resulting in a remainder of 16.
Write down 7 as next digit of the result. 
Result so far: 19331.7
Subtract 294 from 310 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 8:
The number 42 fits into 160 3 times, leaving a remainder of 34.
Write down 3 as next digit of the result. 
Result so far: 19331.73
If we subtract 126 from 160, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Let's proceed to step 9:
If we divide 340 by 42, we get 8 and a remainder of 4.
Record the quotient 8 as the next digit in the result. 
Result so far: 19331.738
Deduct 336 from 340 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 10:
The number 42 fits into 40 0 times, leaving a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 19331.738
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 11:
42 can be fit into 400 9 times, resulting in a remainder of 22.
Put 9 as the next digit of the answer. 
Result so far: 19331.73809
Subtracting 378 from 400 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 12:
When dividing 220 by 42, we get 5 with a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 19331.738095
Subtracting 210 from 220 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.

Going ahead to step 13:
42 can be fit into 100 2 times, resulting in a remainder of 16.
The number 2 becomes the next digit in our result. 
Result so far: 19331.7380952
Subtract 84 from 100 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 14:
160 divided by 42 is 3 with a remainder of 34.
Record the quotient 3 as the next digit in the result. 
Result so far: 19331.73809523
Subtract 126 from 160 to get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Our division results in 19331.73809523 with a remaining 3.4e-08.