21905796 divided by 42 
We want to divide 21905796 by 42.

Advancing to step 1:
42 can be fit into 2 0 times, resulting in a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 42

Advancing to step 2:
If we divide 21 by 42, we get 0 and a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Include the next digit (9) from the dividend after 21, then repeat: 219 / 42

Advancing to step 3:
If we divide 219 by 42, we get 5 and a remainder of 9.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Subtracting 210 from 219 leaves us with 9.
Take the next digit (0) from the dividend and append it to 9, then repeat: 90 / 42

Moving on to step 4:
90 divided by 42 is 2 with a remainder of 6.
Put 2 as the next digit of the answer. 
Result so far: 52.0
If we take 84 away from 90, we end up with 6.
Take the next digit (5) from the dividend and append it to 6, then repeat: 65 / 42

Advancing to step 5:
65 divided by 42 is 1 with a remainder of 23.
Use 1 as the next digit of our solution. 
Result so far: 521.0
The remainder is 23 after subtracting 42 from 65.
Bring next digit (7) of the dividend behind the 23 and repeat the process: 237 / 42

Step 6:
42 goes into 237 5 times with a remainder of 27.
The number 5 becomes the next digit in our result. 
Result so far: 5215.0
If we take 210 away from 237, we end up with 27.
Take the next digit (9) from the dividend and append it to 27, then repeat: 279 / 42

On to step 7:
If we divide 279 by 42, we get 6 and a remainder of 27.
Use 6 as the next digit of our solution. 
Result so far: 52156.0
If we take 252 away from 279, we end up with 27.
Include the next digit (6) from the dividend after 27, then repeat: 276 / 42

Going ahead to step 8:
42 goes into 276 6 times with a remainder of 24.
Record the quotient 6 as the next digit in the result. 
Result so far: 521566.0
Subtract 252 from 276 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 9:
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: 521566.5
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.

On to step 10:
300 divided by 42 is 7 with a remainder of 6.
The number 7 becomes the next digit in our result. 
Result so far: 521566.57
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 11:
42 can be fit into 60 1 times, resulting in a remainder of 18.
Use 1 as the next digit of our solution. 
Result so far: 521566.571
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.

Step 12:
The number 42 fits into 180 4 times, leaving a remainder of 12.
Write down 4 as next digit of the result. 
Result so far: 521566.5714
Subtract 168 from 180 to 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.

Moving on to step 13:
When dividing 120 by 42, we get 2 with a remainder of 36.
The number 2 becomes the next digit in our result. 
Result so far: 521566.57142
Subtract 84 from 120 to 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.

On to step 14:
360 divided by 42 is 8 with a remainder of 24.
The number 8 becomes the next digit in our result. 
Result so far: 521566.571428
The remainder is 24 after subtracting 336 from 360.
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 15:
240 divided by 42 is 5 with a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 521566.5714285
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.

Let's proceed to step 16:
The number 42 fits into 300 7 times, leaving a remainder of 6.
Put 7 as the next digit of the answer. 
Result so far: 521566.57142857
If we subtract 294 from 300, we 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.

The final outcome is 521566.57142857, with a leftover of 6e-09.