We divide 1609872 by 642
We're looking to find how many times 642 goes into 1609872.

Going ahead to step 1:
642 can be fit into 1 0 times, resulting in a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Append the next digit (6) from the dividend to 1 and continue with: 16 / 642

Going ahead to step 2:
When dividing 16 by 642, we get 0 with a remainder of 16.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 16 to get 16.
Grab the next digit (0) from the dividend, add it to 16, then carry on: 160 / 642

Going ahead to step 3:
If we divide 160 by 642, we get 0 and a remainder of 160.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 160 and we're left with 160.
Append the next digit (9) from the dividend to 160 and continue with: 1609 / 642

Advancing to step 4:
If we divide 1609 by 642, we get 2 and a remainder of 325.
The next digit of our result is 2. 
Result so far: 2.0
If we subtract 1284 from 1609, we get 325.
Append the next digit (8) from the dividend to 325 and continue with: 3258 / 642

Moving on to step 5:
3258 divided by 642 is 5 with a remainder of 48.
Put 5 as the next digit of the answer. 
Result so far: 25.0
Subtract 3210 from 3258 to get 48.
Include the next digit (7) from the dividend after 48, then repeat: 487 / 642

On to step 6:
When dividing 487 by 642, we get 0 with a remainder of 487.
Put 0 as the next digit of the answer. 
Result so far: 250.0
Subtracting 0 from 487 leaves us with 487.
Append the next digit (2) from the dividend to 487 and continue with: 4872 / 642

Step 7:
4872 divided by 642 is 7 with a remainder of 378.
The next digit of our result is 7. 
Result so far: 2507.0
If we subtract 4494 from 4872, we get 378.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3780, and continue the process.

Step 8:
642 can be fit into 3780 5 times, resulting in a remainder of 570.
The number 5 becomes the next digit in our result. 
Result so far: 2507.5
Subtract 3210 from 3780 to get 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5700, and continue the process.

Step 9:
642 goes into 5700 8 times with a remainder of 564.
The number 8 becomes the next digit in our result. 
Result so far: 2507.58
The remainder is 564 after subtracting 5136 from 5700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5640, and continue the process.

Going ahead to step 10:
If we divide 5640 by 642, we get 8 and a remainder of 504.
The number 8 becomes the next digit in our result. 
Result so far: 2507.588
The remainder is 504 after subtracting 5136 from 5640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5040, and continue the process.

The final outcome is 2507.588, with a leftover of 0.0504.