We're dividing 902859 by 42 
We want to divide 902859 by 42.

Going ahead to step 1:
9 divided by 42 is 0 with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Fetch the next digit (0) from the dividend, attach it to 9 and continue: 90 / 42

Advancing to step 2:
The number 42 fits into 90 2 times, leaving a remainder of 6.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we subtract 84 from 90, we get 6.
Include the next digit (2) from the dividend after 6, then repeat: 62 / 42

Moving on to step 3:
42 can be fit into 62 1 times, resulting in a remainder of 20.
Record the quotient 1 as the next digit in the result. 
Result so far: 21.0
The remainder is 20 after subtracting 42 from 62.
Append the next digit (8) from the dividend to 20 and continue with: 208 / 42

Advancing to step 4:
42 goes into 208 4 times with a remainder of 40.
The number 4 becomes the next digit in our result. 
Result so far: 214.0
Subtracting 168 from 208 leaves us with 40.
Bring next digit (5) of the dividend behind the 40 and repeat the process: 405 / 42

Step 5:
The number 42 fits into 405 9 times, leaving a remainder of 27.
Record the quotient 9 as the next digit in the result. 
Result so far: 2149.0
If we take 378 away from 405, we end up with 27.
Append the next digit (9) from the dividend to 27 and continue with: 279 / 42

Let's proceed to step 6:
42 can be fit into 279 6 times, resulting in a remainder of 27.
Put 6 as the next digit of the answer. 
Result so far: 21496.0
If we subtract 252 from 279, we get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Let's proceed to step 7:
If we divide 270 by 42, we get 6 and a remainder of 18.
Put 6 as the next digit of the answer. 
Result so far: 21496.6
If we take 252 away from 270, we end up 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.

On to step 8:
42 goes into 180 4 times with a remainder of 12.
Use 4 as the next digit of our solution. 
Result so far: 21496.64
If we subtract 168 from 180, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 9:
42 goes into 120 2 times with a remainder of 36.
Record the quotient 2 as the next digit in the result. 
Result so far: 21496.642
If we subtract 84 from 120, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 10:
42 goes into 360 8 times with a remainder of 24.
The next digit of our result is 8. 
Result so far: 21496.6428
Subtracting 336 from 360 leaves us 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.

On to step 11:
240 divided by 42 is 5 with a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 21496.64285
Deduct 210 from 240 and we're left 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.

Going ahead to step 12:
The number 42 fits into 300 7 times, leaving a remainder of 6.
Write down 7 as next digit of the result. 
Result so far: 21496.642857
Subtract 294 from 300 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 13:
42 can be fit into 60 1 times, resulting in a remainder of 18.
Record the quotient 1 as the next digit in the result. 
Result so far: 21496.6428571
Deduct 42 from 60 and we're left 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.

Moving on to step 14:
If we divide 180 by 42, we get 4 and a remainder of 12.
The next digit of our result is 4. 
Result so far: 21496.64285714
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.

The final result is 21496.64285714 with a remainder of 1.2e-08.