We're dividing 85903552 by 640 
We want to figure out the number of times 85903552 can be divided by 640.

Advancing to step 1:
640 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Grab the next digit (5) from the dividend, add it to 8, then carry on: 85 / 640

Advancing to step 2:
The number 640 fits into 85 0 times, leaving a remainder of 85.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 85, we get 85.
Grab the next digit (9) from the dividend, add it to 85, then carry on: 859 / 640

Going ahead to step 3:
859 divided by 640 is 1 with a remainder of 219.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 219 after subtracting 640 from 859.
Grab the next digit (0) from the dividend, add it to 219, then carry on: 2190 / 640

On to step 4:
2190 divided by 640 is 3 with a remainder of 270.
The next digit of our result is 3. 
Result so far: 13.0
Subtract 1920 from 2190 to get 270.
Append the next digit (3) from the dividend to 270 and continue with: 2703 / 640

Going ahead to step 5:
When dividing 2703 by 640, we get 4 with a remainder of 143.
The next digit of our result is 4. 
Result so far: 134.0
If we take 2560 away from 2703, we end up with 143.
Take the next digit (5) from the dividend and append it to 143, then repeat: 1435 / 640

Step 6:
The number 640 fits into 1435 2 times, leaving a remainder of 155.
Write down 2 as next digit of the result. 
Result so far: 1342.0
The remainder is 155 after subtracting 1280 from 1435.
Include the next digit (5) from the dividend after 155, then repeat: 1555 / 640

Let's proceed to step 7:
When dividing 1555 by 640, we get 2 with a remainder of 275.
Use 2 as the next digit of our solution. 
Result so far: 13422.0
Subtract 1280 from 1555 to get 275.
Fetch the next digit (2) from the dividend, attach it to 275 and continue: 2752 / 640

Moving on to step 8:
2752 divided by 640 is 4 with a remainder of 192.
The next digit of our result is 4. 
Result so far: 134224.0
If we take 2560 away from 2752, we end up with 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

Moving on to step 9:
1920 divided by 640 is 3 with a remainder of 0.
The next digit of our result is 3. 
Result so far: 134224.3
Deduct 1920 from 1920 and we're left 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.

Step 10:
640 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 134224.3
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 11:
If we divide 0 by 640, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 134224.3
Deduct 0 from 0 and we're left 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.

After the division, we end up with 134224.3 and a remainder of 0.0.