We divide 42728233 by 642
We want to figure out the number of times 42728233 can be divided by 642.

On to step 1:
When dividing 4 by 642, we get 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 642

Step 2:
The number 642 fits into 42 0 times, leaving a remainder of 42.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 42 after subtracting 0 from 42.
Take the next digit (7) from the dividend and append it to 42, then repeat: 427 / 642

Advancing to step 3:
The number 642 fits into 427 0 times, leaving a remainder of 427.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 427, we get 427.
Append the next digit (2) from the dividend to 427 and continue with: 4272 / 642

Step 4:
If we divide 4272 by 642, we get 6 and a remainder of 420.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Subtract 3852 from 4272 to get 420.
Append the next digit (8) from the dividend to 420 and continue with: 4208 / 642

On to step 5:
The number 642 fits into 4208 6 times, leaving a remainder of 356.
Record the quotient 6 as the next digit in the result. 
Result so far: 66.0
Subtracting 3852 from 4208 leaves us with 356.
Take the next digit (2) from the dividend and append it to 356, then repeat: 3562 / 642

Moving on to step 6:
The number 642 fits into 3562 5 times, leaving a remainder of 352.
The next digit of our result is 5. 
Result so far: 665.0
Subtract 3210 from 3562 to get 352.
Take the next digit (3) from the dividend and append it to 352, then repeat: 3523 / 642

On to step 7:
The number 642 fits into 3523 5 times, leaving a remainder of 313.
Write down 5 as next digit of the result. 
Result so far: 6655.0
If we subtract 3210 from 3523, we get 313.
Fetch the next digit (3) from the dividend, attach it to 313 and continue: 3133 / 642

Step 8:
3133 divided by 642 is 4 with a remainder of 565.
Write down 4 as next digit of the result. 
Result so far: 66554.0
The remainder is 565 after subtracting 2568 from 3133.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5650, and continue the process.

On to step 9:
If we divide 5650 by 642, we get 8 and a remainder of 514.
Use 8 as the next digit of our solution. 
Result so far: 66554.8
Subtracting 5136 from 5650 leaves us with 514.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5140, and continue the process.

Step 10:
If we divide 5140 by 642, we get 8 and a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 66554.88
Deduct 5136 from 5140 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Our division results in 66554.88 with a remaining 0.004.