We divide 643660 by 57
We want to figure out the number of times 643660 can be divided by 57.

Advancing to step 1:
When dividing 6 by 57, we get 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 57

Step 2:
57 goes into 64 1 times with a remainder of 7.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 57 from 64 to get 7.
Grab the next digit (3) from the dividend, add it to 7, then carry on: 73 / 57

On to step 3:
73 divided by 57 is 1 with a remainder of 16.
The next digit of our result is 1. 
Result so far: 11.0
If we take 57 away from 73, we end up with 16.
Grab the next digit (6) from the dividend, add it to 16, then carry on: 166 / 57

Step 4:
The number 57 fits into 166 2 times, leaving a remainder of 52.
Put 2 as the next digit of the answer. 
Result so far: 112.0
Deduct 114 from 166 and we're left with 52.
Grab the next digit (6) from the dividend, add it to 52, then carry on: 526 / 57

Let's proceed to step 5:
If we divide 526 by 57, we get 9 and a remainder of 13.
The next digit of our result is 9. 
Result so far: 1129.0
If we take 513 away from 526, we end up with 13.
Fetch the next digit (0) from the dividend, attach it to 13 and continue: 130 / 57

Step 6:
The number 57 fits into 130 2 times, leaving a remainder of 16.
Use 2 as the next digit of our solution. 
Result so far: 11292.0
Subtract 114 from 130 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 7:
160 divided by 57 is 2 with a remainder of 46.
Use 2 as the next digit of our solution. 
Result so far: 11292.2
Subtract 114 from 160 to 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.

Let's proceed to step 8:
57 goes into 460 8 times with a remainder of 4.
Write down 8 as next digit of the result. 
Result so far: 11292.28
If we subtract 456 from 460, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 9:
57 can be fit into 40 0 times, resulting in a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 11292.28
If we subtract 0 from 40, we 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.

Let's proceed to step 10:
400 divided by 57 is 7 with a remainder of 1.
The number 7 becomes the next digit in our result. 
Result so far: 11292.2807
Subtracting 399 from 400 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 11:
If we divide 10 by 57, we get 0 and a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 11292.2807
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 12:
The number 57 fits into 100 1 times, leaving a remainder of 43.
Record the quotient 1 as the next digit in the result. 
Result so far: 11292.280701
Deduct 57 from 100 and we're left with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Step 13:
The number 57 fits into 430 7 times, leaving a remainder of 31.
Put 7 as the next digit of the answer. 
Result so far: 11292.2807017
The remainder is 31 after subtracting 399 from 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Going ahead to step 14:
57 goes into 310 5 times with a remainder of 25.
Record the quotient 5 as the next digit in the result. 
Result so far: 11292.28070175
The remainder is 25 after subtracting 285 from 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

In conclusion, the division gives 11292.28070175 with a balance of 2.5e-08.