67671729 ÷ 815 
Let's see how many times 815 fits into 67671729.

Going ahead to step 1:
6 divided by 815 is 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Take the next digit (7) from the dividend and append it to 6, then repeat: 67 / 815

Moving on to step 2:
The number 815 fits into 67 0 times, leaving a remainder of 67.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 67, we get 67.
Include the next digit (6) from the dividend after 67, then repeat: 676 / 815

Going ahead to step 3:
When dividing 676 by 815, we get 0 with a remainder of 676.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 676 and we're left with 676.
Take the next digit (7) from the dividend and append it to 676, then repeat: 6767 / 815

Going ahead to step 4:
The number 815 fits into 6767 8 times, leaving a remainder of 247.
Write down 8 as next digit of the result. 
Result so far: 8.0
If we subtract 6520 from 6767, we get 247.
Grab the next digit (1) from the dividend, add it to 247, then carry on: 2471 / 815

Step 5:
If we divide 2471 by 815, we get 3 and a remainder of 26.
Write down 3 as next digit of the result. 
Result so far: 83.0
Subtracting 2445 from 2471 leaves us with 26.
Fetch the next digit (7) from the dividend, attach it to 26 and continue: 267 / 815

Moving on to step 6:
815 goes into 267 0 times with a remainder of 267.
The next digit of our result is 0. 
Result so far: 830.0
If we take 0 away from 267, we end up with 267.
Append the next digit (2) from the dividend to 267 and continue with: 2672 / 815

Advancing to step 7:
If we divide 2672 by 815, we get 3 and a remainder of 227.
Record the quotient 3 as the next digit in the result. 
Result so far: 8303.0
The remainder is 227 after subtracting 2445 from 2672.
Fetch the next digit (9) from the dividend, attach it to 227 and continue: 2279 / 815

Step 8:
When dividing 2279 by 815, we get 2 with a remainder of 649.
Use 2 as the next digit of our solution. 
Result so far: 83032.0
Subtracting 1630 from 2279 leaves us with 649.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6490, and continue the process.

Going ahead to step 9:
When dividing 6490 by 815, we get 7 with a remainder of 785.
Record the quotient 7 as the next digit in the result. 
Result so far: 83032.7
The remainder is 785 after subtracting 5705 from 6490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7850, and continue the process.

Advancing to step 10:
815 goes into 7850 9 times with a remainder of 515.
Write down 9 as next digit of the result. 
Result so far: 83032.79
Subtract 7335 from 7850 to get 515.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5150, and continue the process.

On to step 11:
When dividing 5150 by 815, we get 6 with a remainder of 260.
Put 6 as the next digit of the answer. 
Result so far: 83032.796
Subtract 4890 from 5150 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.

On to step 12:
2600 divided by 815 is 3 with a remainder of 155.
The next digit of our result is 3. 
Result so far: 83032.7963
If we subtract 2445 from 2600, we get 155.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1550, and continue the process.

Let's proceed to step 13:
1550 divided by 815 is 1 with a remainder of 735.
Record the quotient 1 as the next digit in the result. 
Result so far: 83032.79631
If we subtract 815 from 1550, we get 735.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7350, and continue the process.

Step 14:
If we divide 7350 by 815, we get 9 and a remainder of 15.
Put 9 as the next digit of the answer. 
Result so far: 83032.796319
Deduct 7335 from 7350 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 15:
The number 815 fits into 150 0 times, leaving a remainder of 150.
Record the quotient 0 as the next digit in the result. 
Result so far: 83032.796319
If we take 0 away from 150, we end up with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Let's proceed to step 16:
The number 815 fits into 1500 1 times, leaving a remainder of 685.
Use 1 as the next digit of our solution. 
Result so far: 83032.79631901
Deduct 815 from 1500 and we're left with 685.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6850, and continue the process.

The final outcome is 83032.79631901, with a leftover of 6.85e-07.