238129 divided by 21 
We want to figure out the number of times 238129 can be divided by 21.

Advancing to step 1:
2 divided by 21 is 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Bring next digit (3) of the dividend behind the 2 and repeat the process: 23 / 21

Advancing to step 2:
The number 21 fits into 23 1 times, leaving a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 21 from 23, we get 2.
Grab the next digit (8) from the dividend, add it to 2, then carry on: 28 / 21

Let's proceed to step 3:
21 goes into 28 1 times with a remainder of 7.
Use 1 as the next digit of our solution. 
Result so far: 11.0
Subtract 21 from 28 to get 7.
Take the next digit (1) from the dividend and append it to 7, then repeat: 71 / 21

Step 4:
The number 21 fits into 71 3 times, leaving a remainder of 8.
Put 3 as the next digit of the answer. 
Result so far: 113.0
If we take 63 away from 71, we end up with 8.
Take the next digit (2) from the dividend and append it to 8, then repeat: 82 / 21

On to step 5:
If we divide 82 by 21, we get 3 and a remainder of 19.
The next digit of our result is 3. 
Result so far: 1133.0
Deduct 63 from 82 and we're left with 19.
Take the next digit (9) from the dividend and append it to 19, then repeat: 199 / 21

Step 6:
21 goes into 199 9 times with a remainder of 10.
Use 9 as the next digit of our solution. 
Result so far: 11339.0
If we subtract 189 from 199, we 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.

Advancing to step 7:
The number 21 fits into 100 4 times, leaving a remainder of 16.
Put 4 as the next digit of the answer. 
Result so far: 11339.4
The remainder is 16 after subtracting 84 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 8:
If we divide 160 by 21, we get 7 and a remainder of 13.
Put 7 as the next digit of the answer. 
Result so far: 11339.47
If we take 147 away from 160, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 9:
21 goes into 130 6 times with a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 11339.476
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.

Step 10:
When dividing 40 by 21, we get 1 with a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 11339.4761
Subtracting 21 from 40 leaves us 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.

Advancing to step 11:
21 can be fit into 190 9 times, resulting in a remainder of 1.
Use 9 as the next digit of our solution. 
Result so far: 11339.47619
Subtract 189 from 190 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 12:
10 divided by 21 is 0 with a remainder of 10.
The next digit of our result is 0. 
Result so far: 11339.47619
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 13:
If we divide 100 by 21, we get 4 and a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 11339.4761904
Subtract 84 from 100 to get 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 14:
21 goes into 160 7 times with a remainder of 13.
Write down 7 as next digit of the result. 
Result so far: 11339.47619047
If we take 147 away from 160, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Our division results in 11339.47619047 with a remaining 1.3e-08.