422161 ÷ 66 
Let's see how many times 66 fits into 422161.

Let's proceed to step 1:
4 divided by 66 is 0 with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Fetch the next digit (2) from the dividend, attach it to 4 and continue: 42 / 66

Moving on to step 2:
66 can be fit into 42 0 times, resulting in a remainder of 42.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 42 leaves us with 42.
Grab the next digit (2) from the dividend, add it to 42, then carry on: 422 / 66

On to step 3:
If we divide 422 by 66, we get 6 and a remainder of 26.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
If we subtract 396 from 422, we get 26.
Append the next digit (1) from the dividend to 26 and continue with: 261 / 66

Let's proceed to step 4:
If we divide 261 by 66, we get 3 and a remainder of 63.
Use 3 as the next digit of our solution. 
Result so far: 63.0
Deduct 198 from 261 and we're left with 63.
Grab the next digit (6) from the dividend, add it to 63, then carry on: 636 / 66

Going ahead to step 5:
66 goes into 636 9 times with a remainder of 42.
The number 9 becomes the next digit in our result. 
Result so far: 639.0
If we take 594 away from 636, we end up with 42.
Include the next digit (1) from the dividend after 42, then repeat: 421 / 66

Let's proceed to step 6:
When dividing 421 by 66, we get 6 with a remainder of 25.
Write down 6 as next digit of the result. 
Result so far: 6396.0
If we take 396 away from 421, we end up 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:
If we divide 250 by 66, we get 3 and a remainder of 52.
Write down 3 as next digit of the result. 
Result so far: 6396.3
Subtracting 198 from 250 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.

Moving on 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: 6396.37
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:
The number 66 fits into 580 8 times, leaving a remainder of 52.
Write down 8 as next digit of the result. 
Result so far: 6396.378
Deduct 528 from 580 and we're left 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.

Moving on to step 10:
The number 66 fits into 520 7 times, leaving a remainder of 58.
Put 7 as the next digit of the answer. 
Result so far: 6396.3787
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.

Moving on to step 11:
If we divide 580 by 66, we get 8 and a remainder of 52.
Record the quotient 8 as the next digit in the result. 
Result so far: 6396.37878
Deduct 528 from 580 and we're left 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.

Moving on to step 12:
The number 66 fits into 520 7 times, leaving a remainder of 58.
Record the quotient 7 as the next digit in the result. 
Result so far: 6396.378787
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.

Let's proceed to step 13:
66 can be fit into 580 8 times, resulting in a remainder of 52.
Put 8 as the next digit of the answer. 
Result so far: 6396.3787878
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.

Let's proceed to step 14:
If we divide 520 by 66, we get 7 and a remainder of 58.
Use 7 as the next digit of our solution. 
Result so far: 6396.37878787
If we take 462 away from 520, we end up 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.

In conclusion, the division gives 6396.37878787 with a balance of 5.8e-08.