81519052 ÷ 688 
We want to divide 81519052 by 688.

Step 1:
688 can be fit into 8 0 times, resulting in a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Append the next digit (1) from the dividend to 8 and continue with: 81 / 688

Moving on to step 2:
81 divided by 688 is 0 with a remainder of 81.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 81 to get 81.
Include the next digit (5) from the dividend after 81, then repeat: 815 / 688

Step 3:
If we divide 815 by 688, we get 1 and a remainder of 127.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 688 from 815, we get 127.
Grab the next digit (1) from the dividend, add it to 127, then carry on: 1271 / 688

Advancing to step 4:
688 goes into 1271 1 times with a remainder of 583.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
Subtracting 688 from 1271 leaves us with 583.
Include the next digit (9) from the dividend after 583, then repeat: 5839 / 688

Going ahead to step 5:
If we divide 5839 by 688, we get 8 and a remainder of 335.
Use 8 as the next digit of our solution. 
Result so far: 118.0
If we take 5504 away from 5839, we end up with 335.
Include the next digit (0) from the dividend after 335, then repeat: 3350 / 688

Going ahead to step 6:
688 goes into 3350 4 times with a remainder of 598.
Record the quotient 4 as the next digit in the result. 
Result so far: 1184.0
The remainder is 598 after subtracting 2752 from 3350.
Bring next digit (5) of the dividend behind the 598 and repeat the process: 5985 / 688

Moving on to step 7:
The number 688 fits into 5985 8 times, leaving a remainder of 481.
Use 8 as the next digit of our solution. 
Result so far: 11848.0
The remainder is 481 after subtracting 5504 from 5985.
Append the next digit (2) from the dividend to 481 and continue with: 4812 / 688

Advancing to step 8:
4812 divided by 688 is 6 with a remainder of 684.
Record the quotient 6 as the next digit in the result. 
Result so far: 118486.0
Subtracting 4128 from 4812 leaves us with 684.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6840, and continue the process.

Going ahead to step 9:
6840 divided by 688 is 9 with a remainder of 648.
The next digit of our result is 9. 
Result so far: 118486.9
If we subtract 6192 from 6840, we get 648.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6480, and continue the process.

Advancing to step 10:
When dividing 6480 by 688, we get 9 with a remainder of 288.
Put 9 as the next digit of the answer. 
Result so far: 118486.99
If we subtract 6192 from 6480, we get 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Our division results in 118486.99 with a remaining 0.288.