We divide 42181948 by 21
We want to divide 42181948 by 21.

Let's proceed to step 1:
4 divided by 21 is 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Bring next digit (2) of the dividend behind the 4 and repeat the process: 42 / 21

Let's proceed to step 2:
The number 21 fits into 42 2 times, leaving a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 42 from 42 and we're left with 0.
Fetch the next digit (1) from the dividend, attach it to 0 and continue: 1 / 21

On to step 3:
The number 21 fits into 1 0 times, leaving a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 20.0
Subtract 0 from 1 to get 1.
Include the next digit (8) from the dividend after 1, then repeat: 18 / 21

Advancing to step 4:
21 can be fit into 18 0 times, resulting in a remainder of 18.
Put 0 as the next digit of the answer. 
Result so far: 200.0
Deduct 0 from 18 and we're left with 18.
Fetch the next digit (1) from the dividend, attach it to 18 and continue: 181 / 21

Going ahead to step 5:
If we divide 181 by 21, we get 8 and a remainder of 13.
Put 8 as the next digit of the answer. 
Result so far: 2008.0
If we take 168 away from 181, we end up with 13.
Grab the next digit (9) from the dividend, add it to 13, then carry on: 139 / 21

Let's proceed to step 6:
If we divide 139 by 21, we get 6 and a remainder of 13.
Use 6 as the next digit of our solution. 
Result so far: 20086.0
The remainder is 13 after subtracting 126 from 139.
Include the next digit (4) from the dividend after 13, then repeat: 134 / 21

Let's proceed to step 7:
The number 21 fits into 134 6 times, leaving a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 200866.0
Subtract 126 from 134 to get 8.
Fetch the next digit (8) from the dividend, attach it to 8 and continue: 88 / 21

Going ahead to step 8:
If we divide 88 by 21, we get 4 and a remainder of 4.
The next digit of our result is 4. 
Result so far: 2008664.0
The remainder is 4 after subtracting 84 from 88.
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 9:
The number 21 fits into 40 1 times, leaving a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 2008664.1
If we subtract 21 from 40, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 10:
When dividing 190 by 21, we get 9 with a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 2008664.19
Deduct 189 from 190 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 11:
When dividing 10 by 21, we get 0 with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 2008664.19
Subtract 0 from 10 to 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.

Going ahead to step 12:
21 goes into 100 4 times with a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 2008664.1904
Deduct 84 from 100 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 13:
21 goes into 160 7 times with a remainder of 13.
Write down 7 as next digit of the result. 
Result so far: 2008664.19047
If we subtract 147 from 160, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Let's proceed to step 14:
The number 21 fits into 130 6 times, leaving a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 2008664.190476
Deduct 126 from 130 and we're left 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.

Moving on to step 15:
21 can be fit into 40 1 times, resulting in a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 2008664.1904761
Deduct 21 from 40 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

On to step 16:
21 goes into 190 9 times with a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 2008664.19047619
Deduct 189 from 190 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The quotient of the division is 2008664.19047619, and the remainder is 1e-09.