We're dividing 25273343 by 642 
We want to divide 25273343 by 642.

Going ahead to step 1:
2 divided by 642 is 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Include the next digit (5) from the dividend after 2, then repeat: 25 / 642

Advancing to step 2:
If we divide 25 by 642, we get 0 and a remainder of 25.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 25, we end up with 25.
Take the next digit (2) from the dividend and append it to 25, then repeat: 252 / 642

Moving on to step 3:
If we divide 252 by 642, we get 0 and a remainder of 252.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 252 to get 252.
Append the next digit (7) from the dividend to 252 and continue with: 2527 / 642

Going ahead to step 4:
When dividing 2527 by 642, we get 3 with a remainder of 601.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtracting 1926 from 2527 leaves us with 601.
Fetch the next digit (3) from the dividend, attach it to 601 and continue: 6013 / 642

Step 5:
6013 divided by 642 is 9 with a remainder of 235.
The number 9 becomes the next digit in our result. 
Result so far: 39.0
If we subtract 5778 from 6013, we get 235.
Include the next digit (3) from the dividend after 235, then repeat: 2353 / 642

Let's proceed to step 6:
The number 642 fits into 2353 3 times, leaving a remainder of 427.
Write down 3 as next digit of the result. 
Result so far: 393.0
If we subtract 1926 from 2353, we get 427.
Grab the next digit (4) from the dividend, add it to 427, then carry on: 4274 / 642

Step 7:
When dividing 4274 by 642, we get 6 with a remainder of 422.
Put 6 as the next digit of the answer. 
Result so far: 3936.0
Subtracting 3852 from 4274 leaves us with 422.
Fetch the next digit (3) from the dividend, attach it to 422 and continue: 4223 / 642

Step 8:
642 goes into 4223 6 times with a remainder of 371.
The number 6 becomes the next digit in our result. 
Result so far: 39366.0
If we subtract 3852 from 4223, we get 371.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3710, and continue the process.

Going ahead to step 9:
If we divide 3710 by 642, we get 5 and a remainder of 500.
Record the quotient 5 as the next digit in the result. 
Result so far: 39366.5
Subtracting 3210 from 3710 leaves us with 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

Step 10:
When dividing 5000 by 642, we get 7 with a remainder of 506.
Record the quotient 7 as the next digit in the result. 
Result so far: 39366.57
Deduct 4494 from 5000 and we're left with 506.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5060, and continue the process.

Moving on to step 11:
642 can be fit into 5060 7 times, resulting in a remainder of 566.
Write down 7 as next digit of the result. 
Result so far: 39366.577
If we subtract 4494 from 5060, we get 566.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5660, and continue the process.

The final outcome is 39366.577, with a leftover of 0.0566.