We look at the division of 57706400 by 646 
Our goal is to divide 57706400 by 646.

On to step 1:
646 goes into 5 0 times with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Fetch the next digit (7) from the dividend, attach it to 5 and continue: 57 / 646

Advancing to step 2:
646 can be fit into 57 0 times, resulting in a remainder of 57.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 57, we end up with 57.
Grab the next digit (7) from the dividend, add it to 57, then carry on: 577 / 646

On to step 3:
646 can be fit into 577 0 times, resulting in a remainder of 577.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 577 leaves us with 577.
Fetch the next digit (0) from the dividend, attach it to 577 and continue: 5770 / 646

Going ahead to step 4:
646 can be fit into 5770 8 times, resulting in a remainder of 602.
Write down 8 as next digit of the result. 
Result so far: 8.0
Deduct 5168 from 5770 and we're left with 602.
Grab the next digit (6) from the dividend, add it to 602, then carry on: 6026 / 646

Step 5:
646 goes into 6026 9 times with a remainder of 212.
Put 9 as the next digit of the answer. 
Result so far: 89.0
Deduct 5814 from 6026 and we're left with 212.
Grab the next digit (4) from the dividend, add it to 212, then carry on: 2124 / 646

Going ahead to step 6:
If we divide 2124 by 646, we get 3 and a remainder of 186.
Record the quotient 3 as the next digit in the result. 
Result so far: 893.0
The remainder is 186 after subtracting 1938 from 2124.
Take the next digit (0) from the dividend and append it to 186, then repeat: 1860 / 646

Moving on to step 7:
The number 646 fits into 1860 2 times, leaving a remainder of 568.
Put 2 as the next digit of the answer. 
Result so far: 8932.0
Deduct 1292 from 1860 and we're left with 568.
Take the next digit (0) from the dividend and append it to 568, then repeat: 5680 / 646

Going ahead to step 8:
When dividing 5680 by 646, we get 8 with a remainder of 512.
The next digit of our result is 8. 
Result so far: 89328.0
The remainder is 512 after subtracting 5168 from 5680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5120, and continue the process.

Moving on to step 9:
646 can be fit into 5120 7 times, resulting in a remainder of 598.
Put 7 as the next digit of the answer. 
Result so far: 89328.7
Deduct 4522 from 5120 and we're left with 598.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5980, and continue the process.

Step 10:
If we divide 5980 by 646, we get 9 and a remainder of 166.
The number 9 becomes the next digit in our result. 
Result so far: 89328.79
Deduct 5814 from 5980 and we're left with 166.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1660, and continue the process.

Let's proceed to step 11:
If we divide 1660 by 646, we get 2 and a remainder of 368.
Write down 2 as next digit of the result. 
Result so far: 89328.792
Subtracting 1292 from 1660 leaves us with 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

On to step 12:
The number 646 fits into 3680 5 times, leaving a remainder of 450.
The next digit of our result is 5. 
Result so far: 89328.7925
Subtracting 3230 from 3680 leaves us with 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

Let's proceed to step 13:
When dividing 4500 by 646, we get 6 with a remainder of 624.
Record the quotient 6 as the next digit in the result. 
Result so far: 89328.79256
If we take 3876 away from 4500, we end up with 624.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6240, and continue the process.

Step 14:
When dividing 6240 by 646, we get 9 with a remainder of 426.
The next digit of our result is 9. 
Result so far: 89328.792569
Subtracting 5814 from 6240 leaves us with 426.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4260, and continue the process.

Step 15:
646 goes into 4260 6 times with a remainder of 384.
Write down 6 as next digit of the result. 
Result so far: 89328.7925696
Subtracting 3876 from 4260 leaves us with 384.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

Moving on to step 16:
3840 divided by 646 is 5 with a remainder of 610.
Use 5 as the next digit of our solution. 
Result so far: 89328.79256965
If we subtract 3230 from 3840, we get 610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6100, and continue the process.

In conclusion, the division gives 89328.79256965 with a balance of 6.1e-07.