We're dividing 640872 by 74 
We want to figure out the number of times 640872 can be divided by 74.

On to step 1:
The number 74 fits into 6 0 times, leaving a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 74

On to step 2:
74 can be fit into 64 0 times, resulting in a remainder of 64.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 64 and we're left with 64.
Grab the next digit (0) from the dividend, add it to 64, then carry on: 640 / 74

Advancing to step 3:
When dividing 640 by 74, we get 8 with a remainder of 48.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Deduct 592 from 640 and we're left with 48.
Take the next digit (8) from the dividend and append it to 48, then repeat: 488 / 74

Moving on to step 4:
When dividing 488 by 74, we get 6 with a remainder of 44.
Put 6 as the next digit of the answer. 
Result so far: 86.0
Subtracting 444 from 488 leaves us with 44.
Append the next digit (7) from the dividend to 44 and continue with: 447 / 74

Advancing to step 5:
74 goes into 447 6 times with a remainder of 3.
The number 6 becomes the next digit in our result. 
Result so far: 866.0
Deduct 444 from 447 and we're left with 3.
Fetch the next digit (2) from the dividend, attach it to 3 and continue: 32 / 74

Moving on to step 6:
If we divide 32 by 74, we get 0 and a remainder of 32.
Record the quotient 0 as the next digit in the result. 
Result so far: 8660.0
Subtracting 0 from 32 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 7:
The number 74 fits into 320 4 times, leaving a remainder of 24.
The number 4 becomes the next digit in our result. 
Result so far: 8660.4
The remainder is 24 after subtracting 296 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 8:
74 goes into 240 3 times with a remainder of 18.
Write down 3 as next digit of the result. 
Result so far: 8660.43
Subtracting 222 from 240 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 9:
74 can be fit into 180 2 times, resulting in a remainder of 32.
The next digit of our result is 2. 
Result so far: 8660.432
If we take 148 away from 180, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 10:
When dividing 320 by 74, we get 4 with a remainder of 24.
The next digit of our result is 4. 
Result so far: 8660.4324
If we subtract 296 from 320, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 11:
74 goes into 240 3 times with a remainder of 18.
The next digit of our result is 3. 
Result so far: 8660.43243
The remainder is 18 after subtracting 222 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 12:
When dividing 180 by 74, we get 2 with a remainder of 32.
Record the quotient 2 as the next digit in the result. 
Result so far: 8660.432432
Deduct 148 from 180 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 13:
320 divided by 74 is 4 with a remainder of 24.
Write down 4 as next digit of the result. 
Result so far: 8660.4324324
If we take 296 away from 320, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 14:
74 can be fit into 240 3 times, resulting in a remainder of 18.
The next digit of our result is 3. 
Result so far: 8660.43243243
Subtracting 222 from 240 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

The final outcome is 8660.43243243, with a leftover of 1.8e-08.