Let's divide 863173 by 66
We want to divide 863173 by 66.

Step 1:
66 can be fit into 8 0 times, resulting in a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 66

Let's proceed to step 2:
When dividing 86 by 66, we get 1 with a remainder of 20.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 66 from 86, we get 20.
Include the next digit (3) from the dividend after 20, then repeat: 203 / 66

Moving on to step 3:
When dividing 203 by 66, we get 3 with a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 13.0
If we take 198 away from 203, we end up with 5.
Grab the next digit (1) from the dividend, add it to 5, then carry on: 51 / 66

On to step 4:
51 divided by 66 is 0 with a remainder of 51.
The next digit of our result is 0. 
Result so far: 130.0
The remainder is 51 after subtracting 0 from 51.
Take the next digit (7) from the dividend and append it to 51, then repeat: 517 / 66

Going ahead to step 5:
If we divide 517 by 66, we get 7 and a remainder of 55.
Write down 7 as next digit of the result. 
Result so far: 1307.0
If we take 462 away from 517, we end up with 55.
Bring next digit (3) of the dividend behind the 55 and repeat the process: 553 / 66

Going ahead to step 6:
When dividing 553 by 66, we get 8 with a remainder of 25.
The number 8 becomes the next digit in our result. 
Result so far: 13078.0
Deduct 528 from 553 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 7:
When dividing 250 by 66, we get 3 with a remainder of 52.
Put 3 as the next digit of the answer. 
Result so far: 13078.3
Subtract 198 from 250 to get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Let's proceed to step 8:
If we divide 520 by 66, we get 7 and a remainder of 58.
Record the quotient 7 as the next digit in the result. 
Result so far: 13078.37
The remainder is 58 after subtracting 462 from 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

On to step 9:
66 goes into 580 8 times with a remainder of 52.
Put 8 as the next digit of the answer. 
Result so far: 13078.378
Subtracting 528 from 580 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

On to step 10:
66 goes into 520 7 times with a remainder of 58.
Write down 7 as next digit of the result. 
Result so far: 13078.3787
Subtracting 462 from 520 leaves us with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Going ahead to step 11:
66 can be fit into 580 8 times, resulting in a remainder of 52.
The next digit of our result is 8. 
Result so far: 13078.37878
The remainder is 52 after subtracting 528 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Moving on to step 12:
If we divide 520 by 66, we get 7 and a remainder of 58.
Put 7 as the next digit of the answer. 
Result so far: 13078.378787
If we subtract 462 from 520, we get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

On to step 13:
66 goes into 580 8 times with a remainder of 52.
Record the quotient 8 as the next digit in the result. 
Result so far: 13078.3787878
If we subtract 528 from 580, we get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

On to step 14:
If we divide 520 by 66, we get 7 and a remainder of 58.
Write down 7 as next digit of the result. 
Result so far: 13078.37878787
If we subtract 462 from 520, we get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

The final result is 13078.37878787 with a remainder of 5.8e-08.