We're dividing 79851959 by 666 
We want to divide 79851959 by 666.

Moving on to step 1:
If we divide 7 by 666, we get 0 and a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Take the next digit (9) from the dividend and append it to 7, then repeat: 79 / 666

On to step 2:
When dividing 79 by 666, we get 0 with a remainder of 79.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 79 after subtracting 0 from 79.
Append the next digit (8) from the dividend to 79 and continue with: 798 / 666

Moving on to step 3:
798 divided by 666 is 1 with a remainder of 132.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 666 from 798 leaves us with 132.
Take the next digit (5) from the dividend and append it to 132, then repeat: 1325 / 666

Moving on to step 4:
The number 666 fits into 1325 1 times, leaving a remainder of 659.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
If we take 666 away from 1325, we end up with 659.
Append the next digit (1) from the dividend to 659 and continue with: 6591 / 666

Moving on to step 5:
The number 666 fits into 6591 9 times, leaving a remainder of 597.
Use 9 as the next digit of our solution. 
Result so far: 119.0
Subtract 5994 from 6591 to get 597.
Bring next digit (9) of the dividend behind the 597 and repeat the process: 5979 / 666

On to step 6:
666 goes into 5979 8 times with a remainder of 651.
Record the quotient 8 as the next digit in the result. 
Result so far: 1198.0
The remainder is 651 after subtracting 5328 from 5979.
Include the next digit (5) from the dividend after 651, then repeat: 6515 / 666

Going ahead to step 7:
The number 666 fits into 6515 9 times, leaving a remainder of 521.
Put 9 as the next digit of the answer. 
Result so far: 11989.0
Subtract 5994 from 6515 to get 521.
Bring next digit (9) of the dividend behind the 521 and repeat the process: 5219 / 666

Step 8:
When dividing 5219 by 666, we get 7 with a remainder of 557.
Write down 7 as next digit of the result. 
Result so far: 119897.0
Deduct 4662 from 5219 and we're left with 557.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5570, and continue the process.

Going ahead to step 9:
5570 divided by 666 is 8 with a remainder of 242.
Put 8 as the next digit of the answer. 
Result so far: 119897.8
If we subtract 5328 from 5570, we get 242.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2420, and continue the process.

Step 10:
666 goes into 2420 3 times with a remainder of 422.
The number 3 becomes the next digit in our result. 
Result so far: 119897.83
If we subtract 1998 from 2420, we get 422.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4220, and continue the process.

On to step 11:
666 can be fit into 4220 6 times, resulting in a remainder of 224.
The next digit of our result is 6. 
Result so far: 119897.836
If we subtract 3996 from 4220, we get 224.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

Step 12:
666 goes into 2240 3 times with a remainder of 242.
Put 3 as the next digit of the answer. 
Result so far: 119897.8363
The remainder is 242 after subtracting 1998 from 2240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2420, and continue the process.

On to step 13:
The number 666 fits into 2420 3 times, leaving a remainder of 422.
Write down 3 as next digit of the result. 
Result so far: 119897.83633
If we take 1998 away from 2420, we end up with 422.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4220, and continue the process.

After the division, we end up with 119897.83633 and a remainder of 0.000422.