We're dividing 75857856 by 640 
We want to divide 75857856 by 640.

Advancing to step 1:
When dividing 7 by 640, we get 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Append the next digit (5) from the dividend to 7 and continue with: 75 / 640

Let's proceed to step 2:
If we divide 75 by 640, we get 0 and a remainder of 75.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 75, we end up with 75.
Take the next digit (8) from the dividend and append it to 75, then repeat: 758 / 640

Let's proceed to step 3:
640 goes into 758 1 times with a remainder of 118.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 118 after subtracting 640 from 758.
Include the next digit (5) from the dividend after 118, then repeat: 1185 / 640

Let's proceed to step 4:
640 can be fit into 1185 1 times, resulting in a remainder of 545.
Use 1 as the next digit of our solution. 
Result so far: 11.0
The remainder is 545 after subtracting 640 from 1185.
Bring next digit (7) of the dividend behind the 545 and repeat the process: 5457 / 640

Step 5:
When dividing 5457 by 640, we get 8 with a remainder of 337.
Write down 8 as next digit of the result. 
Result so far: 118.0
Deduct 5120 from 5457 and we're left with 337.
Take the next digit (8) from the dividend and append it to 337, then repeat: 3378 / 640

On to step 6:
3378 divided by 640 is 5 with a remainder of 178.
Record the quotient 5 as the next digit in the result. 
Result so far: 1185.0
The remainder is 178 after subtracting 3200 from 3378.
Bring next digit (5) of the dividend behind the 178 and repeat the process: 1785 / 640

Advancing to step 7:
640 goes into 1785 2 times with a remainder of 505.
Write down 2 as next digit of the result. 
Result so far: 11852.0
If we take 1280 away from 1785, we end up with 505.
Append the next digit (6) from the dividend to 505 and continue with: 5056 / 640

Moving on to step 8:
When dividing 5056 by 640, we get 7 with a remainder of 576.
Use 7 as the next digit of our solution. 
Result so far: 118527.0
If we subtract 4480 from 5056, we get 576.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5760, and continue the process.

Going ahead to step 9:
If we divide 5760 by 640, we get 9 and a remainder of 0.
Put 9 as the next digit of the answer. 
Result so far: 118527.9
Subtract 5760 from 5760 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 10:
The number 640 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 118527.9
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 11:
640 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 118527.9
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 118527.9, with a leftover of 0.0.