We divide 851722 by 42
The aim is to understand the frequency of 42 in 851722.

Moving on 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
Deduct 0 from 8 and we're left with 8.
Fetch the next digit (5) from the dividend, attach it to 8 and continue: 85 / 42

Moving on to step 2:
42 goes into 85 2 times with a remainder of 1.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtract 84 from 85 to get 1.
Grab the next digit (1) from the dividend, add it to 1, then carry on: 11 / 42

Moving on to step 3:
42 can be fit into 11 0 times, resulting in a remainder of 11.
The next digit of our result is 0. 
Result so far: 20.0
Subtracting 0 from 11 leaves us with 11.
Include the next digit (7) from the dividend after 11, then repeat: 117 / 42

Moving on to step 4:
When dividing 117 by 42, we get 2 with a remainder of 33.
Record the quotient 2 as the next digit in the result. 
Result so far: 202.0
If we take 84 away from 117, we end up with 33.
Append the next digit (2) from the dividend to 33 and continue with: 332 / 42

On to step 5:
42 can be fit into 332 7 times, resulting in a remainder of 38.
Write down 7 as next digit of the result. 
Result so far: 2027.0
Subtracting 294 from 332 leaves us with 38.
Bring next digit (2) of the dividend behind the 38 and repeat the process: 382 / 42

Going ahead to step 6:
42 can be fit into 382 9 times, resulting in a remainder of 4.
The next digit of our result is 9. 
Result so far: 20279.0
The remainder is 4 after subtracting 378 from 382.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 7:
42 can be fit into 40 0 times, resulting in a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 20279.0
If we take 0 away from 40, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 8:
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: 20279.09
The remainder is 22 after subtracting 378 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 9:
The number 42 fits into 220 5 times, leaving a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 20279.095
If we subtract 210 from 220, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 10:
The number 42 fits into 100 2 times, leaving a remainder of 16.
Use 2 as the next digit of our solution. 
Result so far: 20279.0952
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.

Step 11:
42 can be fit into 160 3 times, resulting in a remainder of 34.
Put 3 as the next digit of the answer. 
Result so far: 20279.09523
Subtracting 126 from 160 leaves us with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

On to step 12:
If we divide 340 by 42, we get 8 and a remainder of 4.
Put 8 as the next digit of the answer. 
Result so far: 20279.095238
If we take 336 away from 340, we end up 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.

Advancing to step 13:
40 divided by 42 is 0 with a remainder of 40.
The next digit of our result is 0. 
Result so far: 20279.095238
If we take 0 away from 40, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 14:
400 divided by 42 is 9 with a remainder of 22.
The next digit of our result is 9. 
Result so far: 20279.09523809
If we subtract 378 from 400, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

The quotient of the division is 20279.09523809, and the remainder is 2.2e-08.