21800230 divided by 688 
Let's see how many times 688 fits into 21800230.

Going ahead to step 1:
2 divided by 688 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.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 688

Let's proceed to step 2:
21 divided by 688 is 0 with a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Include the next digit (8) from the dividend after 21, then repeat: 218 / 688

Step 3:
When dividing 218 by 688, we get 0 with a remainder of 218.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 218 leaves us with 218.
Fetch the next digit (0) from the dividend, attach it to 218 and continue: 2180 / 688

Going ahead to step 4:
688 goes into 2180 3 times with a remainder of 116.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we take 2064 away from 2180, we end up with 116.
Bring next digit (0) of the dividend behind the 116 and repeat the process: 1160 / 688

Moving on to step 5:
688 can be fit into 1160 1 times, resulting in a remainder of 472.
Record the quotient 1 as the next digit in the result. 
Result so far: 31.0
If we subtract 688 from 1160, we get 472.
Append the next digit (2) from the dividend to 472 and continue with: 4722 / 688

Going ahead to step 6:
4722 divided by 688 is 6 with a remainder of 594.
Record the quotient 6 as the next digit in the result. 
Result so far: 316.0
If we take 4128 away from 4722, we end up with 594.
Bring next digit (3) of the dividend behind the 594 and repeat the process: 5943 / 688

Advancing to step 7:
When dividing 5943 by 688, we get 8 with a remainder of 439.
Record the quotient 8 as the next digit in the result. 
Result so far: 3168.0
The remainder is 439 after subtracting 5504 from 5943.
Include the next digit (0) from the dividend after 439, then repeat: 4390 / 688

Step 8:
688 can be fit into 4390 6 times, resulting in a remainder of 262.
The number 6 becomes the next digit in our result. 
Result so far: 31686.0
If we subtract 4128 from 4390, we get 262.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2620, and continue the process.

Let's proceed to step 9:
688 goes into 2620 3 times with a remainder of 556.
The number 3 becomes the next digit in our result. 
Result so far: 31686.3
Subtracting 2064 from 2620 leaves us with 556.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5560, and continue the process.

On to step 10:
688 goes into 5560 8 times with a remainder of 56.
Record the quotient 8 as the next digit in the result. 
Result so far: 31686.38
Deduct 5504 from 5560 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Going ahead to step 11:
688 goes into 560 0 times with a remainder of 560.
Put 0 as the next digit of the answer. 
Result so far: 31686.38
Subtract 0 from 560 to get 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

Moving on to step 12:
When dividing 5600 by 688, we get 8 with a remainder of 96.
Record the quotient 8 as the next digit in the result. 
Result so far: 31686.3808
The remainder is 96 after subtracting 5504 from 5600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

On to step 13:
688 goes into 960 1 times with a remainder of 272.
The next digit of our result is 1. 
Result so far: 31686.38081
Subtract 688 from 960 to get 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Advancing to step 14:
If we divide 2720 by 688, we get 3 and a remainder of 656.
Put 3 as the next digit of the answer. 
Result so far: 31686.380813
Subtract 2064 from 2720 to get 656.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6560, and continue the process.

On to step 15:
688 can be fit into 6560 9 times, resulting in a remainder of 368.
The next digit of our result is 9. 
Result so far: 31686.3808139
If we take 6192 away from 6560, we end up with 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

Let's proceed to step 16:
688 can be fit into 3680 5 times, resulting in a remainder of 240.
The number 5 becomes the next digit in our result. 
Result so far: 31686.38081395
The remainder is 240 after subtracting 3440 from 3680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

The final result is 31686.38081395 with a remainder of 2.4e-07.