We divide 98665871 by 640
We're looking to find how many times 640 goes into 98665871.

Advancing to step 1:
If we divide 9 by 640, we get 0 and a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Take the next digit (8) from the dividend and append it to 9, then repeat: 98 / 640

Let's proceed to step 2:
98 divided by 640 is 0 with a remainder of 98.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 98, we get 98.
Bring next digit (6) of the dividend behind the 98 and repeat the process: 986 / 640

Going ahead to step 3:
986 divided by 640 is 1 with a remainder of 346.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 640 from 986 leaves us with 346.
Grab the next digit (6) from the dividend, add it to 346, then carry on: 3466 / 640

Let's proceed to step 4:
640 goes into 3466 5 times with a remainder of 266.
The number 5 becomes the next digit in our result. 
Result so far: 15.0
If we subtract 3200 from 3466, we get 266.
Bring next digit (5) of the dividend behind the 266 and repeat the process: 2665 / 640

Moving on to step 5:
640 can be fit into 2665 4 times, resulting in a remainder of 105.
The number 4 becomes the next digit in our result. 
Result so far: 154.0
The remainder is 105 after subtracting 2560 from 2665.
Bring next digit (8) of the dividend behind the 105 and repeat the process: 1058 / 640

Advancing to step 6:
640 goes into 1058 1 times with a remainder of 418.
The next digit of our result is 1. 
Result so far: 1541.0
Subtracting 640 from 1058 leaves us with 418.
Take the next digit (7) from the dividend and append it to 418, then repeat: 4187 / 640

On to step 7:
The number 640 fits into 4187 6 times, leaving a remainder of 347.
Put 6 as the next digit of the answer. 
Result so far: 15416.0
The remainder is 347 after subtracting 3840 from 4187.
Include the next digit (1) from the dividend after 347, then repeat: 3471 / 640

Advancing to step 8:
640 can be fit into 3471 5 times, resulting in a remainder of 271.
Put 5 as the next digit of the answer. 
Result so far: 154165.0
Deduct 3200 from 3471 and we're left with 271.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2710, and continue the process.

Advancing to step 9:
The number 640 fits into 2710 4 times, leaving a remainder of 150.
Record the quotient 4 as the next digit in the result. 
Result so far: 154165.4
If we subtract 2560 from 2710, we get 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

On to step 10:
1500 divided by 640 is 2 with a remainder of 220.
The next digit of our result is 2. 
Result so far: 154165.42
Subtract 1280 from 1500 to get 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

On to step 11:
640 can be fit into 2200 3 times, resulting in a remainder of 280.
Write down 3 as next digit of the result. 
Result so far: 154165.423
Deduct 1920 from 2200 and we're left with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Advancing to step 12:
If we divide 2800 by 640, we get 4 and a remainder of 240.
Write down 4 as next digit of the result. 
Result so far: 154165.4234
Subtracting 2560 from 2800 leaves us with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Advancing to step 13:
When dividing 2400 by 640, we get 3 with a remainder of 480.
The number 3 becomes the next digit in our result. 
Result so far: 154165.42343
Subtracting 1920 from 2400 leaves us with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Let's proceed to step 14:
640 goes into 4800 7 times with a remainder of 320.
Record the quotient 7 as the next digit in the result. 
Result so far: 154165.423437
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.

Let's proceed to step 15:
640 goes into 3200 5 times with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 154165.4234375
Subtracting 3200 from 3200 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.

Step 16:
When dividing 0 by 640, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 154165.4234375
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.

In conclusion, the division gives 154165.4234375 with a balance of 0.0.