Let's divide 66951799 by 864
We want to figure out the number of times 66951799 can be divided by 864.

Going ahead to step 1:
The number 864 fits into 6 0 times, leaving a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 864

Going ahead to step 2:
864 can be fit into 66 0 times, resulting in a remainder of 66.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 66, we get 66.
Include the next digit (9) from the dividend after 66, then repeat: 669 / 864

Going ahead to step 3:
864 goes into 669 0 times with a remainder of 669.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 669 to get 669.
Append the next digit (5) from the dividend to 669 and continue with: 6695 / 864

Step 4:
6695 divided by 864 is 7 with a remainder of 647.
Use 7 as the next digit of our solution. 
Result so far: 7.0
If we take 6048 away from 6695, we end up with 647.
Include the next digit (1) from the dividend after 647, then repeat: 6471 / 864

Advancing to step 5:
When dividing 6471 by 864, we get 7 with a remainder of 423.
Write down 7 as next digit of the result. 
Result so far: 77.0
Deduct 6048 from 6471 and we're left with 423.
Fetch the next digit (7) from the dividend, attach it to 423 and continue: 4237 / 864

On to step 6:
864 goes into 4237 4 times with a remainder of 781.
Write down 4 as next digit of the result. 
Result so far: 774.0
Deduct 3456 from 4237 and we're left with 781.
Take the next digit (9) from the dividend and append it to 781, then repeat: 7819 / 864

Going ahead to step 7:
7819 divided by 864 is 9 with a remainder of 43.
Put 9 as the next digit of the answer. 
Result so far: 7749.0
If we subtract 7776 from 7819, we get 43.
Append the next digit (9) from the dividend to 43 and continue with: 439 / 864

Going ahead to step 8:
If we divide 439 by 864, we get 0 and a remainder of 439.
Use 0 as the next digit of our solution. 
Result so far: 77490.0
Deduct 0 from 439 and we're left with 439.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4390, and continue the process.

Let's proceed to step 9:
When dividing 4390 by 864, we get 5 with a remainder of 70.
The next digit of our result is 5. 
Result so far: 77490.5
Deduct 4320 from 4390 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

On to step 10:
700 divided by 864 is 0 with a remainder of 700.
Put 0 as the next digit of the answer. 
Result so far: 77490.5
If we take 0 away from 700, we end up with 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7000, and continue the process.

Moving on to step 11:
The number 864 fits into 7000 8 times, leaving a remainder of 88.
The number 8 becomes the next digit in our result. 
Result so far: 77490.508
Deduct 6912 from 7000 and we're left with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Going ahead to step 12:
880 divided by 864 is 1 with a remainder of 16.
Write down 1 as next digit of the result. 
Result so far: 77490.5081
Subtracting 864 from 880 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 13:
If we divide 160 by 864, we get 0 and a remainder of 160.
Record the quotient 0 as the next digit in the result. 
Result so far: 77490.5081
If we subtract 0 from 160, 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.

On to step 14:
When dividing 1600 by 864, we get 1 with a remainder of 736.
Use 1 as the next digit of our solution. 
Result so far: 77490.508101
Subtract 864 from 1600 to get 736.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7360, and continue the process.

On to step 15:
864 goes into 7360 8 times with a remainder of 448.
The next digit of our result is 8. 
Result so far: 77490.5081018
If we take 6912 away from 7360, we end up with 448.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4480, and continue the process.

On to step 16:
When dividing 4480 by 864, we get 5 with a remainder of 160.
The number 5 becomes the next digit in our result. 
Result so far: 77490.50810185
Subtract 4320 from 4480 to 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.

The final result is 77490.50810185 with a remainder of 1.6e-07.