We're dividing 18039450 by 641 
We're looking to find how many times 641 goes into 18039450.

Going ahead to step 1:
If we divide 1 by 641, we get 0 and a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 641

Moving on to step 2:
18 divided by 641 is 0 with a remainder of 18.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 18, we end up with 18.
Bring next digit (0) of the dividend behind the 18 and repeat the process: 180 / 641

Advancing to step 3:
The number 641 fits into 180 0 times, leaving a remainder of 180.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 180 after subtracting 0 from 180.
Include the next digit (3) from the dividend after 180, then repeat: 1803 / 641

Let's proceed to step 4:
1803 divided by 641 is 2 with a remainder of 521.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtracting 1282 from 1803 leaves us with 521.
Include the next digit (9) from the dividend after 521, then repeat: 5219 / 641

Going ahead to step 5:
641 goes into 5219 8 times with a remainder of 91.
Write down 8 as next digit of the result. 
Result so far: 28.0
If we subtract 5128 from 5219, we get 91.
Grab the next digit (4) from the dividend, add it to 91, then carry on: 914 / 641

Let's proceed to step 6:
641 goes into 914 1 times with a remainder of 273.
The next digit of our result is 1. 
Result so far: 281.0
If we subtract 641 from 914, we get 273.
Grab the next digit (5) from the dividend, add it to 273, then carry on: 2735 / 641

Let's proceed to step 7:
641 goes into 2735 4 times with a remainder of 171.
The next digit of our result is 4. 
Result so far: 2814.0
If we take 2564 away from 2735, we end up with 171.
Grab the next digit (0) from the dividend, add it to 171, then carry on: 1710 / 641

Advancing to step 8:
When dividing 1710 by 641, we get 2 with a remainder of 428.
Record the quotient 2 as the next digit in the result. 
Result so far: 28142.0
If we subtract 1282 from 1710, we get 428.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4280, and continue the process.

Moving on to step 9:
4280 divided by 641 is 6 with a remainder of 434.
The number 6 becomes the next digit in our result. 
Result so far: 28142.6
If we subtract 3846 from 4280, we get 434.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4340, and continue the process.

On to step 10:
When dividing 4340 by 641, we get 6 with a remainder of 494.
Record the quotient 6 as the next digit in the result. 
Result so far: 28142.66
The remainder is 494 after subtracting 3846 from 4340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4940, and continue the process.

The final outcome is 28142.66, with a leftover of 0.494.