21173571 ÷ 688 
Let's see how many times 688 fits into 21173571.

Advancing to step 1:
If we divide 2 by 688, we get 0 and a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 688

Let's proceed to step 2:
When dividing 21 by 688, we get 0 with a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Fetch the next digit (1) from the dividend, attach it to 21 and continue: 211 / 688

Let's proceed to step 3:
If we divide 211 by 688, we get 0 and a remainder of 211.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 211 and we're left with 211.
Fetch the next digit (7) from the dividend, attach it to 211 and continue: 2117 / 688

Let's proceed to step 4:
688 goes into 2117 3 times with a remainder of 53.
Use 3 as the next digit of our solution. 
Result so far: 3.0
The remainder is 53 after subtracting 2064 from 2117.
Grab the next digit (3) from the dividend, add it to 53, then carry on: 533 / 688

Going ahead to step 5:
533 divided by 688 is 0 with a remainder of 533.
Put 0 as the next digit of the answer. 
Result so far: 30.0
Subtracting 0 from 533 leaves us with 533.
Fetch the next digit (5) from the dividend, attach it to 533 and continue: 5335 / 688

Moving on to step 6:
5335 divided by 688 is 7 with a remainder of 519.
The next digit of our result is 7. 
Result so far: 307.0
The remainder is 519 after subtracting 4816 from 5335.
Bring next digit (7) of the dividend behind the 519 and repeat the process: 5197 / 688

Step 7:
If we divide 5197 by 688, we get 7 and a remainder of 381.
Write down 7 as next digit of the result. 
Result so far: 3077.0
If we take 4816 away from 5197, we end up with 381.
Include the next digit (1) from the dividend after 381, then repeat: 3811 / 688

Moving on to step 8:
When dividing 3811 by 688, we get 5 with a remainder of 371.
Record the quotient 5 as the next digit in the result. 
Result so far: 30775.0
Subtracting 3440 from 3811 leaves us with 371.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3710, and continue the process.

On to step 9:
The number 688 fits into 3710 5 times, leaving a remainder of 270.
The next digit of our result is 5. 
Result so far: 30775.5
Subtract 3440 from 3710 to get 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Step 10:
When dividing 2700 by 688, we get 3 with a remainder of 636.
Put 3 as the next digit of the answer. 
Result so far: 30775.53
Subtracting 2064 from 2700 leaves us with 636.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6360, and continue the process.

Step 11:
When dividing 6360 by 688, we get 9 with a remainder of 168.
Record the quotient 9 as the next digit in the result. 
Result so far: 30775.539
If we take 6192 away from 6360, we end up with 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Advancing to step 12:
688 goes into 1680 2 times with a remainder of 304.
The next digit of our result is 2. 
Result so far: 30775.5392
Subtract 1376 from 1680 to get 304.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3040, and continue the process.

On to step 13:
If we divide 3040 by 688, we get 4 and a remainder of 288.
Write down 4 as next digit of the result. 
Result so far: 30775.53924
Subtracting 2752 from 3040 leaves us with 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

On to step 14:
688 can be fit into 2880 4 times, resulting in a remainder of 128.
Write down 4 as next digit of the result. 
Result so far: 30775.539244
Subtracting 2752 from 2880 leaves us with 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

The quotient of the division is 30775.539244, and the remainder is 1.28e-05.