Let's divide 21002369 by 808
We're looking to find how many times 808 goes into 21002369.

Advancing to step 1:
808 goes into 2 0 times with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 808

Let's proceed to step 2:
The number 808 fits into 21 0 times, leaving a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Grab the next digit (0) from the dividend, add it to 21, then carry on: 210 / 808

Going ahead to step 3:
808 can be fit into 210 0 times, resulting in a remainder of 210.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 210, we end up with 210.
Take the next digit (0) from the dividend and append it to 210, then repeat: 2100 / 808

Let's proceed to step 4:
The number 808 fits into 2100 2 times, leaving a remainder of 484.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
The remainder is 484 after subtracting 1616 from 2100.
Grab the next digit (2) from the dividend, add it to 484, then carry on: 4842 / 808

On to step 5:
808 can be fit into 4842 5 times, resulting in a remainder of 802.
Write down 5 as next digit of the result. 
Result so far: 25.0
Deduct 4040 from 4842 and we're left with 802.
Append the next digit (3) from the dividend to 802 and continue with: 8023 / 808

Advancing to step 6:
The number 808 fits into 8023 9 times, leaving a remainder of 751.
Write down 9 as next digit of the result. 
Result so far: 259.0
Deduct 7272 from 8023 and we're left with 751.
Grab the next digit (6) from the dividend, add it to 751, then carry on: 7516 / 808

Let's proceed to step 7:
If we divide 7516 by 808, we get 9 and a remainder of 244.
Put 9 as the next digit of the answer. 
Result so far: 2599.0
The remainder is 244 after subtracting 7272 from 7516.
Grab the next digit (9) from the dividend, add it to 244, then carry on: 2449 / 808

Advancing to step 8:
If we divide 2449 by 808, we get 3 and a remainder of 25.
The number 3 becomes the next digit in our result. 
Result so far: 25993.0
Subtracting 2424 from 2449 leaves us with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 9:
808 goes into 250 0 times with a remainder of 250.
Record the quotient 0 as the next digit in the result. 
Result so far: 25993.0
Deduct 0 from 250 and we're left with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Moving on to step 10:
808 can be fit into 2500 3 times, resulting in a remainder of 76.
The next digit of our result is 3. 
Result so far: 25993.03
If we subtract 2424 from 2500, we get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Step 11:
808 goes into 760 0 times with a remainder of 760.
The number 0 becomes the next digit in our result. 
Result so far: 25993.03
Subtracting 0 from 760 leaves us with 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7600, and continue the process.

Step 12:
The number 808 fits into 7600 9 times, leaving a remainder of 328.
Record the quotient 9 as the next digit in the result. 
Result so far: 25993.0309
The remainder is 328 after subtracting 7272 from 7600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3280, and continue the process.

Step 13:
If we divide 3280 by 808, we get 4 and a remainder of 48.
The next digit of our result is 4. 
Result so far: 25993.03094
If we take 3232 away from 3280, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 14:
When dividing 480 by 808, we get 0 with a remainder of 480.
Use 0 as the next digit of our solution. 
Result so far: 25993.03094
Subtracting 0 from 480 leaves us with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Going ahead to step 15:
808 goes into 4800 5 times with a remainder of 760.
The number 5 becomes the next digit in our result. 
Result so far: 25993.0309405
Subtract 4040 from 4800 to get 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7600, and continue the process.

Advancing to step 16:
When dividing 7600 by 808, we get 9 with a remainder of 328.
Put 9 as the next digit of the answer. 
Result so far: 25993.03094059
Subtract 7272 from 7600 to get 328.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3280, and continue the process.

Our division results in 25993.03094059 with a remaining 3.28e-07.