We're dividing 215818 by 66 
We want to divide 215818 by 66.

Let's proceed to step 1:
2 divided by 66 is 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 66

On to step 2:
66 can be fit into 21 0 times, resulting in a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Include the next digit (5) from the dividend after 21, then repeat: 215 / 66

On to step 3:
215 divided by 66 is 3 with a remainder of 17.
The next digit of our result is 3. 
Result so far: 3.0
Subtracting 198 from 215 leaves us with 17.
Include the next digit (8) from the dividend after 17, then repeat: 178 / 66

On to step 4:
When dividing 178 by 66, we get 2 with a remainder of 46.
Write down 2 as next digit of the result. 
Result so far: 32.0
If we subtract 132 from 178, we get 46.
Bring next digit (1) of the dividend behind the 46 and repeat the process: 461 / 66

Moving on to step 5:
The number 66 fits into 461 6 times, leaving a remainder of 65.
Record the quotient 6 as the next digit in the result. 
Result so far: 326.0
If we take 396 away from 461, we end up with 65.
Bring next digit (8) of the dividend behind the 65 and repeat the process: 658 / 66

On to step 6:
If we divide 658 by 66, we get 9 and a remainder of 64.
The next digit of our result is 9. 
Result so far: 3269.0
If we take 594 away from 658, we end up with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Let's proceed to step 7:
The number 66 fits into 640 9 times, leaving a remainder of 46.
Write down 9 as next digit of the result. 
Result so far: 3269.9
If we subtract 594 from 640, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Step 8:
When dividing 460 by 66, we get 6 with a remainder of 64.
Record the quotient 6 as the next digit in the result. 
Result so far: 3269.96
If we take 396 away from 460, we end up with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Advancing to step 9:
The number 66 fits into 640 9 times, leaving a remainder of 46.
The next digit of our result is 9. 
Result so far: 3269.969
The remainder is 46 after subtracting 594 from 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

On to step 10:
66 can be fit into 460 6 times, resulting in a remainder of 64.
Put 6 as the next digit of the answer. 
Result so far: 3269.9696
If we take 396 away from 460, we end up with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

On to step 11:
If we divide 640 by 66, we get 9 and a remainder of 46.
Put 9 as the next digit of the answer. 
Result so far: 3269.96969
Subtracting 594 from 640 leaves us with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Let's proceed to step 12:
66 can be fit into 460 6 times, resulting in a remainder of 64.
The number 6 becomes the next digit in our result. 
Result so far: 3269.969696
Deduct 396 from 460 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Advancing to step 13:
640 divided by 66 is 9 with a remainder of 46.
The number 9 becomes the next digit in our result. 
Result so far: 3269.9696969
Deduct 594 from 640 and we're left with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 14:
If we divide 460 by 66, we get 6 and a remainder of 64.
The number 6 becomes the next digit in our result. 
Result so far: 3269.96969696
Deduct 396 from 460 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

The final outcome is 3269.96969696, with a leftover of 6.4e-08.