Let's divide 42039159 by 855
The aim is to understand the frequency of 855 in 42039159.

Let's proceed to step 1:
If we divide 4 by 855, we get 0 and a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 855

Advancing to step 2:
If we divide 42 by 855, we get 0 and a remainder of 42.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 42 and we're left with 42.
Fetch the next digit (0) from the dividend, attach it to 42 and continue: 420 / 855

Going ahead to step 3:
If we divide 420 by 855, we get 0 and a remainder of 420.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 420, we get 420.
Include the next digit (3) from the dividend after 420, then repeat: 4203 / 855

Going ahead to step 4:
When dividing 4203 by 855, we get 4 with a remainder of 783.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtracting 3420 from 4203 leaves us with 783.
Grab the next digit (9) from the dividend, add it to 783, then carry on: 7839 / 855

Going ahead to step 5:
If we divide 7839 by 855, we get 9 and a remainder of 144.
The number 9 becomes the next digit in our result. 
Result so far: 49.0
Subtracting 7695 from 7839 leaves us with 144.
Take the next digit (1) from the dividend and append it to 144, then repeat: 1441 / 855

Going ahead to step 6:
855 goes into 1441 1 times with a remainder of 586.
Use 1 as the next digit of our solution. 
Result so far: 491.0
If we take 855 away from 1441, we end up with 586.
Append the next digit (5) from the dividend to 586 and continue with: 5865 / 855

Step 7:
5865 divided by 855 is 6 with a remainder of 735.
The number 6 becomes the next digit in our result. 
Result so far: 4916.0
If we subtract 5130 from 5865, we get 735.
Bring next digit (9) of the dividend behind the 735 and repeat the process: 7359 / 855

Moving on to step 8:
If we divide 7359 by 855, we get 8 and a remainder of 519.
Put 8 as the next digit of the answer. 
Result so far: 49168.0
If we subtract 6840 from 7359, we get 519.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5190, and continue the process.

Let's proceed to step 9:
855 can be fit into 5190 6 times, resulting in a remainder of 60.
Use 6 as the next digit of our solution. 
Result so far: 49168.6
Subtracting 5130 from 5190 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 10:
The number 855 fits into 600 0 times, leaving a remainder of 600.
The next digit of our result is 0. 
Result so far: 49168.6
Subtracting 0 from 600 leaves us with 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

Step 11:
855 goes into 6000 7 times with a remainder of 15.
Use 7 as the next digit of our solution. 
Result so far: 49168.607
Deduct 5985 from 6000 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 12:
The number 855 fits into 150 0 times, leaving a remainder of 150.
Write down 0 as next digit of the result. 
Result so far: 49168.607
The remainder is 150 after subtracting 0 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Let's proceed to step 13:
When dividing 1500 by 855, we get 1 with a remainder of 645.
Write down 1 as next digit of the result. 
Result so far: 49168.60701
Subtracting 855 from 1500 leaves us with 645.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6450, and continue the process.

Going ahead to step 14:
If we divide 6450 by 855, we get 7 and a remainder of 465.
Record the quotient 7 as the next digit in the result. 
Result so far: 49168.607017
Subtract 5985 from 6450 to get 465.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4650, and continue the process.

Let's proceed to step 15:
The number 855 fits into 4650 5 times, leaving a remainder of 375.
Use 5 as the next digit of our solution. 
Result so far: 49168.6070175
Subtract 4275 from 4650 to get 375.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

Going ahead to step 16:
When dividing 3750 by 855, we get 4 with a remainder of 330.
The next digit of our result is 4. 
Result so far: 49168.60701754
Subtract 3420 from 3750 to get 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

The final outcome is 49168.60701754, with a leftover of 3.3e-07.