81767718 ÷ 661 
We want to divide 81767718 by 661.

Let's proceed to step 1:
The number 661 fits into 8 0 times, leaving a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 661

Going ahead to step 2:
661 can be fit into 81 0 times, resulting in 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.
Fetch the next digit (7) from the dividend, attach it to 81 and continue: 817 / 661

On to step 3:
When dividing 817 by 661, we get 1 with a remainder of 156.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 661 from 817 and we're left with 156.
Grab the next digit (6) from the dividend, add it to 156, then carry on: 1566 / 661

Moving on to step 4:
If we divide 1566 by 661, we get 2 and a remainder of 244.
Use 2 as the next digit of our solution. 
Result so far: 12.0
If we subtract 1322 from 1566, we get 244.
Grab the next digit (7) from the dividend, add it to 244, then carry on: 2447 / 661

Going ahead to step 5:
If we divide 2447 by 661, we get 3 and a remainder of 464.
The next digit of our result is 3. 
Result so far: 123.0
The remainder is 464 after subtracting 1983 from 2447.
Fetch the next digit (7) from the dividend, attach it to 464 and continue: 4647 / 661

Moving on to step 6:
661 goes into 4647 7 times with a remainder of 20.
The number 7 becomes the next digit in our result. 
Result so far: 1237.0
Subtracting 4627 from 4647 leaves us with 20.
Bring next digit (1) of the dividend behind the 20 and repeat the process: 201 / 661

Advancing to step 7:
The number 661 fits into 201 0 times, leaving a remainder of 201.
Use 0 as the next digit of our solution. 
Result so far: 12370.0
Subtract 0 from 201 to get 201.
Append the next digit (8) from the dividend to 201 and continue with: 2018 / 661

On to step 8:
2018 divided by 661 is 3 with a remainder of 35.
Use 3 as the next digit of our solution. 
Result so far: 123703.0
Subtract 1983 from 2018 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Let's proceed to step 9:
661 goes into 350 0 times with a remainder of 350.
Write down 0 as next digit of the result. 
Result so far: 123703.0
If we subtract 0 from 350, we get 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Going ahead to step 10:
661 can be fit into 3500 5 times, resulting in a remainder of 195.
The next digit of our result is 5. 
Result so far: 123703.05
If we subtract 3305 from 3500, we get 195.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

Moving on to step 11:
If we divide 1950 by 661, we get 2 and a remainder of 628.
Record the quotient 2 as the next digit in the result. 
Result so far: 123703.052
Deduct 1322 from 1950 and we're left with 628.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6280, and continue the process.

Going ahead to step 12:
661 goes into 6280 9 times with a remainder of 331.
Use 9 as the next digit of our solution. 
Result so far: 123703.0529
Subtracting 5949 from 6280 leaves us with 331.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3310, and continue the process.

On to step 13:
The number 661 fits into 3310 5 times, leaving a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 123703.05295
If we subtract 3305 from 3310, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 14:
50 divided by 661 is 0 with a remainder of 50.
Put 0 as the next digit of the answer. 
Result so far: 123703.05295
Deduct 0 from 50 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 15:
When dividing 500 by 661, we get 0 with a remainder of 500.
Record the quotient 0 as the next digit in the result. 
Result so far: 123703.05295
Subtracting 0 from 500 leaves us with 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

After the division, we end up with 123703.05295 and a remainder of 5e-06.