852975 divided by 42 
The aim is to understand the frequency of 42 in 852975.

Advancing to step 1:
If we divide 8 by 42, we get 0 and a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Take the next digit (5) from the dividend and append it to 8, then repeat: 85 / 42

On to step 2:
If we divide 85 by 42, we get 2 and a remainder of 1.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
The remainder is 1 after subtracting 84 from 85.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 42

Advancing to step 3:
When dividing 12 by 42, we get 0 with a remainder of 12.
The next digit of our result is 0. 
Result so far: 20.0
Deduct 0 from 12 and we're left with 12.
Append the next digit (9) from the dividend to 12 and continue with: 129 / 42

Moving on to step 4:
129 divided by 42 is 3 with a remainder of 3.
Use 3 as the next digit of our solution. 
Result so far: 203.0
Deduct 126 from 129 and we're left with 3.
Include the next digit (7) from the dividend after 3, then repeat: 37 / 42

Advancing to step 5:
37 divided by 42 is 0 with a remainder of 37.
Use 0 as the next digit of our solution. 
Result so far: 2030.0
If we take 0 away from 37, we end up with 37.
Grab the next digit (5) from the dividend, add it to 37, then carry on: 375 / 42

Going ahead to step 6:
375 divided by 42 is 8 with a remainder of 39.
Use 8 as the next digit of our solution. 
Result so far: 20308.0
Subtract 336 from 375 to get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Advancing to step 7:
390 divided by 42 is 9 with a remainder of 12.
Use 9 as the next digit of our solution. 
Result so far: 20308.9
Subtracting 378 from 390 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 8:
42 can be fit into 120 2 times, resulting in a remainder of 36.
Use 2 as the next digit of our solution. 
Result so far: 20308.92
Subtracting 84 from 120 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 9:
When dividing 360 by 42, we get 8 with a remainder of 24.
Record the quotient 8 as the next digit in the result. 
Result so far: 20308.928
Deduct 336 from 360 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 10:
If we divide 240 by 42, we get 5 and a remainder of 30.
Record the quotient 5 as the next digit in the result. 
Result so far: 20308.9285
If we take 210 away from 240, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 11:
42 can be fit into 300 7 times, resulting in a remainder of 6.
Put 7 as the next digit of the answer. 
Result so far: 20308.92857
If we take 294 away from 300, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 12:
The number 42 fits into 60 1 times, leaving a remainder of 18.
Put 1 as the next digit of the answer. 
Result so far: 20308.928571
Subtracting 42 from 60 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 13:
If we divide 180 by 42, we get 4 and a remainder of 12.
The number 4 becomes the next digit in our result. 
Result so far: 20308.9285714
If we take 168 away from 180, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 14:
The number 42 fits into 120 2 times, leaving a remainder of 36.
Use 2 as the next digit of our solution. 
Result so far: 20308.92857142
The remainder is 36 after subtracting 84 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Our division results in 20308.92857142 with a remaining 3.6e-08.