We look at the division of 42899801 by 640 
We want to figure out the number of times 42899801 can be divided by 640.

Step 1:
The number 640 fits into 4 0 times, leaving a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 640

Going ahead to step 2:
42 divided by 640 is 0 with a remainder of 42.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 42, we end up with 42.
Include the next digit (8) from the dividend after 42, then repeat: 428 / 640

Advancing to step 3:
640 goes into 428 0 times with a remainder of 428.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 428 and we're left with 428.
Bring next digit (9) of the dividend behind the 428 and repeat the process: 4289 / 640

Let's proceed to step 4:
640 can be fit into 4289 6 times, resulting in a remainder of 449.
The next digit of our result is 6. 
Result so far: 6.0
Deduct 3840 from 4289 and we're left with 449.
Fetch the next digit (9) from the dividend, attach it to 449 and continue: 4499 / 640

Advancing to step 5:
640 can be fit into 4499 7 times, resulting in a remainder of 19.
Put 7 as the next digit of the answer. 
Result so far: 67.0
If we subtract 4480 from 4499, we get 19.
Include the next digit (8) from the dividend after 19, then repeat: 198 / 640

Going ahead to step 6:
198 divided by 640 is 0 with a remainder of 198.
The number 0 becomes the next digit in our result. 
Result so far: 670.0
If we take 0 away from 198, we end up with 198.
Include the next digit (0) from the dividend after 198, then repeat: 1980 / 640

Moving on to step 7:
1980 divided by 640 is 3 with a remainder of 60.
The next digit of our result is 3. 
Result so far: 6703.0
The remainder is 60 after subtracting 1920 from 1980.
Include the next digit (1) from the dividend after 60, then repeat: 601 / 640

Moving on to step 8:
If we divide 601 by 640, we get 0 and a remainder of 601.
Use 0 as the next digit of our solution. 
Result so far: 67030.0
Subtracting 0 from 601 leaves us with 601.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6010, and continue the process.

Step 9:
When dividing 6010 by 640, we get 9 with a remainder of 250.
The number 9 becomes the next digit in our result. 
Result so far: 67030.9
Subtract 5760 from 6010 to get 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Going ahead to step 10:
When dividing 2500 by 640, we get 3 with a remainder of 580.
Record the quotient 3 as the next digit in the result. 
Result so far: 67030.93
Deduct 1920 from 2500 and we're left with 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

Moving on to step 11:
If we divide 5800 by 640, we get 9 and a remainder of 40.
Record the quotient 9 as the next digit in the result. 
Result so far: 67030.939
Subtracting 5760 from 5800 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 12:
640 goes into 400 0 times with a remainder of 400.
The number 0 becomes the next digit in our result. 
Result so far: 67030.939
Deduct 0 from 400 and we're left with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Step 13:
If we divide 4000 by 640, we get 6 and a remainder of 160.
Write down 6 as next digit of the result. 
Result so far: 67030.93906
The remainder is 160 after subtracting 3840 from 4000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Advancing to step 14:
640 can be fit into 1600 2 times, resulting in a remainder of 320.
Write down 2 as next digit of the result. 
Result so far: 67030.939062
The remainder is 320 after subtracting 1280 from 1600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Going ahead to step 15:
640 can be fit into 3200 5 times, resulting in a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 67030.9390625
Subtract 3200 from 3200 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.

Advancing to step 16:
640 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 67030.9390625
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.

Our division results in 67030.9390625 with a remaining 0.0.