21211661 divided by 687 
We're looking to find how many times 687 goes into 21211661.

On to step 1:
The number 687 fits into 2 0 times, leaving a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 687

Let's proceed to step 2:
687 goes into 21 0 times with a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Bring next digit (2) of the dividend behind the 21 and repeat the process: 212 / 687

On to step 3:
When dividing 212 by 687, we get 0 with a remainder of 212.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 212 and we're left with 212.
Include the next digit (1) from the dividend after 212, then repeat: 2121 / 687

On to step 4:
When dividing 2121 by 687, we get 3 with a remainder of 60.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we take 2061 away from 2121, we end up with 60.
Append the next digit (1) from the dividend to 60 and continue with: 601 / 687

Going ahead to step 5:
When dividing 601 by 687, we get 0 with a remainder of 601.
The next digit of our result is 0. 
Result so far: 30.0
If we subtract 0 from 601, we get 601.
Grab the next digit (6) from the dividend, add it to 601, then carry on: 6016 / 687

Moving on to step 6:
If we divide 6016 by 687, we get 8 and a remainder of 520.
The next digit of our result is 8. 
Result so far: 308.0
If we subtract 5496 from 6016, we get 520.
Bring next digit (6) of the dividend behind the 520 and repeat the process: 5206 / 687

On to step 7:
When dividing 5206 by 687, we get 7 with a remainder of 397.
Write down 7 as next digit of the result. 
Result so far: 3087.0
Deduct 4809 from 5206 and we're left with 397.
Take the next digit (1) from the dividend and append it to 397, then repeat: 3971 / 687

Going ahead to step 8:
3971 divided by 687 is 5 with a remainder of 536.
Record the quotient 5 as the next digit in the result. 
Result so far: 30875.0
If we take 3435 away from 3971, we end up with 536.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5360, and continue the process.

Step 9:
The number 687 fits into 5360 7 times, leaving a remainder of 551.
Write down 7 as next digit of the result. 
Result so far: 30875.7
Deduct 4809 from 5360 and we're left with 551.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5510, and continue the process.

Advancing to step 10:
The number 687 fits into 5510 8 times, leaving a remainder of 14.
Record the quotient 8 as the next digit in the result. 
Result so far: 30875.78
Subtract 5496 from 5510 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 11:
140 divided by 687 is 0 with a remainder of 140.
The next digit of our result is 0. 
Result so far: 30875.78
Subtracting 0 from 140 leaves us with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Moving on to step 12:
687 can be fit into 1400 2 times, resulting in a remainder of 26.
The next digit of our result is 2. 
Result so far: 30875.7802
If we subtract 1374 from 1400, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 13:
If we divide 260 by 687, we get 0 and a remainder of 260.
Use 0 as the next digit of our solution. 
Result so far: 30875.7802
Subtract 0 from 260 to get 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Step 14:
When dividing 2600 by 687, we get 3 with a remainder of 539.
The next digit of our result is 3. 
Result so far: 30875.780203
Deduct 2061 from 2600 and we're left with 539.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5390, and continue the process.

Going ahead to step 15:
5390 divided by 687 is 7 with a remainder of 581.
Put 7 as the next digit of the answer. 
Result so far: 30875.7802037
Deduct 4809 from 5390 and we're left with 581.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5810, and continue the process.

Step 16:
687 can be fit into 5810 8 times, resulting in a remainder of 314.
Use 8 as the next digit of our solution. 
Result so far: 30875.78020378
If we subtract 5496 from 5810, we get 314.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3140, and continue the process.

After the division, we end up with 30875.78020378 and a remainder of 3.14e-07.