We're dividing 66730789 by 171 
Our goal is to divide 66730789 by 171.

Moving on to step 1:
171 can be fit into 6 0 times, resulting in a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 171

Advancing to step 2:
When dividing 66 by 171, we get 0 with a remainder of 66.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 66, we get 66.
Fetch the next digit (7) from the dividend, attach it to 66 and continue: 667 / 171

Moving on to step 3:
If we divide 667 by 171, we get 3 and a remainder of 154.
The next digit of our result is 3. 
Result so far: 3.0
If we subtract 513 from 667, we get 154.
Include the next digit (3) from the dividend after 154, then repeat: 1543 / 171

On to step 4:
If we divide 1543 by 171, we get 9 and a remainder of 4.
Use 9 as the next digit of our solution. 
Result so far: 39.0
Subtracting 1539 from 1543 leaves us with 4.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 171

Moving on to step 5:
The number 171 fits into 40 0 times, leaving a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 390.0
Subtract 0 from 40 to get 40.
Grab the next digit (7) from the dividend, add it to 40, then carry on: 407 / 171

Advancing to step 6:
When dividing 407 by 171, we get 2 with a remainder of 65.
Use 2 as the next digit of our solution. 
Result so far: 3902.0
If we subtract 342 from 407, we get 65.
Append the next digit (8) from the dividend to 65 and continue with: 658 / 171

Let's proceed to step 7:
When dividing 658 by 171, we get 3 with a remainder of 145.
Put 3 as the next digit of the answer. 
Result so far: 39023.0
If we subtract 513 from 658, we get 145.
Bring next digit (9) of the dividend behind the 145 and repeat the process: 1459 / 171

Going ahead to step 8:
171 goes into 1459 8 times with a remainder of 91.
Put 8 as the next digit of the answer. 
Result so far: 390238.0
If we subtract 1368 from 1459, we get 91.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

Moving on to step 9:
910 divided by 171 is 5 with a remainder of 55.
The number 5 becomes the next digit in our result. 
Result so far: 390238.5
Subtract 855 from 910 to get 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Going ahead to step 10:
When dividing 550 by 171, we get 3 with a remainder of 37.
Write down 3 as next digit of the result. 
Result so far: 390238.53
If we take 513 away from 550, we end up with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Let's proceed to step 11:
171 can be fit into 370 2 times, resulting in a remainder of 28.
Put 2 as the next digit of the answer. 
Result so far: 390238.532
The remainder is 28 after subtracting 342 from 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 12:
The number 171 fits into 280 1 times, leaving a remainder of 109.
Use 1 as the next digit of our solution. 
Result so far: 390238.5321
If we subtract 171 from 280, we get 109.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1090, and continue the process.

Moving on to step 13:
When dividing 1090 by 171, we get 6 with a remainder of 64.
The number 6 becomes the next digit in our result. 
Result so far: 390238.53216
Deduct 1026 from 1090 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.

Let's proceed to step 14:
640 divided by 171 is 3 with a remainder of 127.
Record the quotient 3 as the next digit in the result. 
Result so far: 390238.532163
If we take 513 away from 640, we end up with 127.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1270, and continue the process.

Let's proceed to step 15:
When dividing 1270 by 171, we get 7 with a remainder of 73.
The next digit of our result is 7. 
Result so far: 390238.5321637
Subtracting 1197 from 1270 leaves us with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Going ahead to step 16:
When dividing 730 by 171, we get 4 with a remainder of 46.
Record the quotient 4 as the next digit in the result. 
Result so far: 390238.53216374
Subtracting 684 from 730 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.

In conclusion, the division gives 390238.53216374 with a balance of 4.6e-08.