We look at the division of 99649511 by 640 
We want to figure out the number of times 99649511 can be divided by 640.

Advancing to step 1:
9 divided by 640 is 0 with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Append the next digit (9) from the dividend to 9 and continue with: 99 / 640

On to step 2:
The number 640 fits into 99 0 times, leaving a remainder of 99.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 99 and we're left with 99.
Take the next digit (6) from the dividend and append it to 99, then repeat: 996 / 640

Step 3:
If we divide 996 by 640, we get 1 and a remainder of 356.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 640 away from 996, we end up with 356.
Fetch the next digit (4) from the dividend, attach it to 356 and continue: 3564 / 640

Going ahead to step 4:
If we divide 3564 by 640, we get 5 and a remainder of 364.
The next digit of our result is 5. 
Result so far: 15.0
Deduct 3200 from 3564 and we're left with 364.
Take the next digit (9) from the dividend and append it to 364, then repeat: 3649 / 640

Let's proceed to step 5:
When dividing 3649 by 640, we get 5 with a remainder of 449.
The number 5 becomes the next digit in our result. 
Result so far: 155.0
If we take 3200 away from 3649, we end up with 449.
Bring next digit (5) of the dividend behind the 449 and repeat the process: 4495 / 640

Going ahead to step 6:
640 can be fit into 4495 7 times, resulting in a remainder of 15.
The next digit of our result is 7. 
Result so far: 1557.0
Subtracting 4480 from 4495 leaves us with 15.
Fetch the next digit (1) from the dividend, attach it to 15 and continue: 151 / 640

Going ahead to step 7:
151 divided by 640 is 0 with a remainder of 151.
Record the quotient 0 as the next digit in the result. 
Result so far: 15570.0
Subtract 0 from 151 to get 151.
Include the next digit (1) from the dividend after 151, then repeat: 1511 / 640

Going ahead to step 8:
640 can be fit into 1511 2 times, resulting in a remainder of 231.
Use 2 as the next digit of our solution. 
Result so far: 155702.0
If we subtract 1280 from 1511, we get 231.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2310, and continue the process.

Let's proceed to step 9:
If we divide 2310 by 640, we get 3 and a remainder of 390.
Use 3 as the next digit of our solution. 
Result so far: 155702.3
The remainder is 390 after subtracting 1920 from 2310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3900, and continue the process.

Step 10:
640 can be fit into 3900 6 times, resulting in a remainder of 60.
The number 6 becomes the next digit in our result. 
Result so far: 155702.36
Subtracting 3840 from 3900 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 11:
640 can be fit into 600 0 times, resulting in a remainder of 600.
Put 0 as the next digit of the answer. 
Result so far: 155702.36
If we take 0 away from 600, we end up with 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

Let's proceed to step 12:
The number 640 fits into 6000 9 times, leaving a remainder of 240.
The next digit of our result is 9. 
Result so far: 155702.3609
If we subtract 5760 from 6000, we get 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

On to step 13:
The number 640 fits into 2400 3 times, leaving a remainder of 480.
The next digit of our result is 3. 
Result so far: 155702.36093
If we subtract 1920 from 2400, we get 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Going ahead to step 14:
4800 divided by 640 is 7 with a remainder of 320.
The number 7 becomes the next digit in our result. 
Result so far: 155702.360937
If we take 4480 away from 4800, we end up with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

On to step 15:
The number 640 fits into 3200 5 times, leaving a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 155702.3609375
If we take 3200 away from 3200, we end up 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.

On to step 16:
When dividing 0 by 640, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 155702.3609375
If we take 0 away from 0, we end up 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 result is 155702.3609375 with a remainder of 0.0.