Let's divide 66690870 by 668
We want to divide 66690870 by 668.

Step 1:
668 can be fit into 6 0 times, resulting in a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 668

Advancing to step 2:
When dividing 66 by 668, we get 0 with a remainder of 66.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 66 to get 66.
Grab the next digit (6) from the dividend, add it to 66, then carry on: 666 / 668

Step 3:
668 goes into 666 0 times with a remainder of 666.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 666, we get 666.
Append the next digit (9) from the dividend to 666 and continue with: 6669 / 668

On to step 4:
When dividing 6669 by 668, we get 9 with a remainder of 657.
Write down 9 as next digit of the result. 
Result so far: 9.0
Subtract 6012 from 6669 to get 657.
Include the next digit (0) from the dividend after 657, then repeat: 6570 / 668

Moving on to step 5:
The number 668 fits into 6570 9 times, leaving a remainder of 558.
The number 9 becomes the next digit in our result. 
Result so far: 99.0
The remainder is 558 after subtracting 6012 from 6570.
Fetch the next digit (8) from the dividend, attach it to 558 and continue: 5588 / 668

Step 6:
5588 divided by 668 is 8 with a remainder of 244.
Put 8 as the next digit of the answer. 
Result so far: 998.0
Subtract 5344 from 5588 to get 244.
Take the next digit (7) from the dividend and append it to 244, then repeat: 2447 / 668

Moving on to step 7:
If we divide 2447 by 668, we get 3 and a remainder of 443.
Record the quotient 3 as the next digit in the result. 
Result so far: 9983.0
If we subtract 2004 from 2447, we get 443.
Grab the next digit (0) from the dividend, add it to 443, then carry on: 4430 / 668

On to step 8:
668 goes into 4430 6 times with a remainder of 422.
Record the quotient 6 as the next digit in the result. 
Result so far: 99836.0
Deduct 4008 from 4430 and we're left 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.

On to step 9:
668 can be fit into 4220 6 times, resulting in a remainder of 212.
Use 6 as the next digit of our solution. 
Result so far: 99836.6
If we take 4008 away from 4220, we end up with 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

Moving on to step 10:
The number 668 fits into 2120 3 times, leaving a remainder of 116.
The number 3 becomes the next digit in our result. 
Result so far: 99836.63
Subtracting 2004 from 2120 leaves us with 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Step 11:
1160 divided by 668 is 1 with a remainder of 492.
The number 1 becomes the next digit in our result. 
Result so far: 99836.631
Deduct 668 from 1160 and we're left with 492.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4920, and continue the process.

Going ahead to step 12:
668 can be fit into 4920 7 times, resulting in a remainder of 244.
Put 7 as the next digit of the answer. 
Result so far: 99836.6317
The remainder is 244 after subtracting 4676 from 4920.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2440, and continue the process.

Step 13:
When dividing 2440 by 668, we get 3 with a remainder of 436.
Record the quotient 3 as the next digit in the result. 
Result so far: 99836.63173
If we subtract 2004 from 2440, we get 436.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4360, and continue the process.

On to step 14:
668 goes into 4360 6 times with a remainder of 352.
The next digit of our result is 6. 
Result so far: 99836.631736
If we take 4008 away from 4360, we end up with 352.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

Moving on to step 15:
The number 668 fits into 3520 5 times, leaving a remainder of 180.
Put 5 as the next digit of the answer. 
Result so far: 99836.6317365
Deduct 3340 from 3520 and we're left with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Let's proceed to step 16:
668 goes into 1800 2 times with a remainder of 464.
The number 2 becomes the next digit in our result. 
Result so far: 99836.63173652
Subtract 1336 from 1800 to get 464.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4640, and continue the process.

The final result is 99836.63173652 with a remainder of 4.64e-07.