81749915 divided by 680 
We're looking to find how many times 680 goes into 81749915.

Advancing to step 1:
680 goes into 8 0 times with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 680

Step 2:
If we divide 81 by 680, we get 0 and a remainder of 81.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 81, we end up with 81.
Include the next digit (7) from the dividend after 81, then repeat: 817 / 680

Advancing to step 3:
When dividing 817 by 680, we get 1 with a remainder of 137.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 137 after subtracting 680 from 817.
Append the next digit (4) from the dividend to 137 and continue with: 1374 / 680

Moving on to step 4:
680 can be fit into 1374 2 times, resulting in a remainder of 14.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
If we take 1360 away from 1374, we end up with 14.
Include the next digit (9) from the dividend after 14, then repeat: 149 / 680

On to step 5:
149 divided by 680 is 0 with a remainder of 149.
Put 0 as the next digit of the answer. 
Result so far: 120.0
Subtracting 0 from 149 leaves us with 149.
Append the next digit (9) from the dividend to 149 and continue with: 1499 / 680

Moving on to step 6:
The number 680 fits into 1499 2 times, leaving a remainder of 139.
Write down 2 as next digit of the result. 
Result so far: 1202.0
Subtract 1360 from 1499 to get 139.
Append the next digit (1) from the dividend to 139 and continue with: 1391 / 680

On to step 7:
680 can be fit into 1391 2 times, resulting in a remainder of 31.
The number 2 becomes the next digit in our result. 
Result so far: 12022.0
Subtracting 1360 from 1391 leaves us with 31.
Append the next digit (5) from the dividend to 31 and continue with: 315 / 680

Let's proceed to step 8:
680 goes into 315 0 times with a remainder of 315.
Use 0 as the next digit of our solution. 
Result so far: 120220.0
If we subtract 0 from 315, we get 315.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3150, and continue the process.

Let's proceed to step 9:
680 goes into 3150 4 times with a remainder of 430.
The number 4 becomes the next digit in our result. 
Result so far: 120220.4
Deduct 2720 from 3150 and we're left with 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4300, and continue the process.

Step 10:
The number 680 fits into 4300 6 times, leaving a remainder of 220.
The next digit of our result is 6. 
Result so far: 120220.46
If we subtract 4080 from 4300, we get 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

On to step 11:
If we divide 2200 by 680, we get 3 and a remainder of 160.
Put 3 as the next digit of the answer. 
Result so far: 120220.463
If we subtract 2040 from 2200, we get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Going ahead to step 12:
The number 680 fits into 1600 2 times, leaving a remainder of 240.
The next digit of our result is 2. 
Result so far: 120220.4632
Subtracting 1360 from 1600 leaves us with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

On to step 13:
If we divide 2400 by 680, we get 3 and a remainder of 360.
The next digit of our result is 3. 
Result so far: 120220.46323
The remainder is 360 after subtracting 2040 from 2400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Advancing to step 14:
680 can be fit into 3600 5 times, resulting in a remainder of 200.
The next digit of our result is 5. 
Result so far: 120220.463235
If we subtract 3400 from 3600, we get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Going ahead to step 15:
When dividing 2000 by 680, we get 2 with a remainder of 640.
Write down 2 as next digit of the result. 
Result so far: 120220.4632352
If we subtract 1360 from 2000, we get 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Going ahead to step 16:
The number 680 fits into 6400 9 times, leaving a remainder of 280.
Use 9 as the next digit of our solution. 
Result so far: 120220.46323529
Subtracting 6120 from 6400 leaves us with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

The final result is 120220.46323529 with a remainder of 2.8e-07.