57319423 ÷ 660 
We're looking to find how many times 660 goes into 57319423.

Let's proceed to step 1:
If we divide 5 by 660, we get 0 and a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Bring next digit (7) of the dividend behind the 5 and repeat the process: 57 / 660

Step 2:
57 divided by 660 is 0 with a remainder of 57.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 57 after subtracting 0 from 57.
Fetch the next digit (3) from the dividend, attach it to 57 and continue: 573 / 660

On to step 3:
660 can be fit into 573 0 times, resulting in a remainder of 573.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 573 leaves us with 573.
Append the next digit (1) from the dividend to 573 and continue with: 5731 / 660

Moving on to step 4:
660 goes into 5731 8 times with a remainder of 451.
Put 8 as the next digit of the answer. 
Result so far: 8.0
If we take 5280 away from 5731, we end up with 451.
Grab the next digit (9) from the dividend, add it to 451, then carry on: 4519 / 660

Moving on to step 5:
660 can be fit into 4519 6 times, resulting in a remainder of 559.
The next digit of our result is 6. 
Result so far: 86.0
If we subtract 3960 from 4519, we get 559.
Include the next digit (4) from the dividend after 559, then repeat: 5594 / 660

On to step 6:
660 goes into 5594 8 times with a remainder of 314.
Use 8 as the next digit of our solution. 
Result so far: 868.0
If we take 5280 away from 5594, we end up with 314.
Include the next digit (2) from the dividend after 314, then repeat: 3142 / 660

Let's proceed to step 7:
660 can be fit into 3142 4 times, resulting in a remainder of 502.
The next digit of our result is 4. 
Result so far: 8684.0
Subtracting 2640 from 3142 leaves us with 502.
Grab the next digit (3) from the dividend, add it to 502, then carry on: 5023 / 660

Let's proceed to step 8:
660 can be fit into 5023 7 times, resulting in a remainder of 403.
The number 7 becomes the next digit in our result. 
Result so far: 86847.0
The remainder is 403 after subtracting 4620 from 5023.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4030, and continue the process.

Advancing to step 9:
660 goes into 4030 6 times with a remainder of 70.
The number 6 becomes the next digit in our result. 
Result so far: 86847.6
Subtract 3960 from 4030 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Advancing to step 10:
700 divided by 660 is 1 with a remainder of 40.
Use 1 as the next digit of our solution. 
Result so far: 86847.61
If we take 660 away from 700, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 11:
400 divided by 660 is 0 with a remainder of 400.
The number 0 becomes the next digit in our result. 
Result so far: 86847.61
If we take 0 away from 400, we end up with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

On to step 12:
4000 divided by 660 is 6 with a remainder of 40.
The next digit of our result is 6. 
Result so far: 86847.6106
Subtract 3960 from 4000 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 13:
660 goes into 400 0 times with a remainder of 400.
The number 0 becomes the next digit in our result. 
Result so far: 86847.6106
Subtracting 0 from 400 leaves us with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Advancing to step 14:
660 can be fit into 4000 6 times, resulting in a remainder of 40.
The next digit of our result is 6. 
Result so far: 86847.610606
Deduct 3960 from 4000 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 15:
660 goes into 400 0 times with a remainder of 400.
Record the quotient 0 as the next digit in the result. 
Result so far: 86847.610606
If we take 0 away from 400, we end up with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Advancing to step 16:
660 goes into 4000 6 times with a remainder of 40.
Use 6 as the next digit of our solution. 
Result so far: 86847.61060606
Deduct 3960 from 4000 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Our division results in 86847.61060606 with a remaining 4e-08.