1129988 divided by 21 
Let's see how many times 21 fits into 1129988.

Let's proceed to step 1:
21 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Grab the next digit (1) from the dividend, add it to 1, then carry on: 11 / 21

Moving on to step 2:
When dividing 11 by 21, we get 0 with a remainder of 11.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 11 and we're left with 11.
Bring next digit (2) of the dividend behind the 11 and repeat the process: 112 / 21

Let's proceed to step 3:
21 goes into 112 5 times with a remainder of 7.
Use 5 as the next digit of our solution. 
Result so far: 5.0
If we take 105 away from 112, we end up with 7.
Append the next digit (9) from the dividend to 7 and continue with: 79 / 21

Let's proceed to step 4:
If we divide 79 by 21, we get 3 and a remainder of 16.
Write down 3 as next digit of the result. 
Result so far: 53.0
If we subtract 63 from 79, we get 16.
Fetch the next digit (9) from the dividend, attach it to 16 and continue: 169 / 21

Let's proceed to step 5:
When dividing 169 by 21, we get 8 with a remainder of 1.
The next digit of our result is 8. 
Result so far: 538.0
The remainder is 1 after subtracting 168 from 169.
Include the next digit (8) from the dividend after 1, then repeat: 18 / 21

On to step 6:
The number 21 fits into 18 0 times, leaving a remainder of 18.
The next digit of our result is 0. 
Result so far: 5380.0
The remainder is 18 after subtracting 0 from 18.
Take the next digit (8) from the dividend and append it to 18, then repeat: 188 / 21

Advancing to step 7:
If we divide 188 by 21, we get 8 and a remainder of 20.
Record the quotient 8 as the next digit in the result. 
Result so far: 53808.0
The remainder is 20 after subtracting 168 from 188.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 8:
21 can be fit into 200 9 times, resulting in a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 53808.9
If we subtract 189 from 200, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 9:
If we divide 110 by 21, we get 5 and a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 53808.95
Subtracting 105 from 110 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 10:
When dividing 50 by 21, we get 2 with a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 53808.952
Deduct 42 from 50 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 11:
If we divide 80 by 21, we get 3 and a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 53808.9523
Subtract 63 from 80 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 12:
21 can be fit into 170 8 times, resulting in a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 53808.95238
The remainder is 2 after subtracting 168 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 13:
20 divided by 21 is 0 with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 53808.95238
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 14:
If we divide 200 by 21, we get 9 and a remainder of 11.
Put 9 as the next digit of the answer. 
Result so far: 53808.9523809
If we take 189 away from 200, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 15:
The number 21 fits into 110 5 times, leaving a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 53808.95238095
If we take 105 away from 110, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The final result is 53808.95238095 with a remainder of 5e-09.