183859 divided by 45 
We want to divide 183859 by 45.

On to step 1:
The number 45 fits into 1 0 times, leaving a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 45

Going ahead to step 2:
45 can be fit into 18 0 times, resulting in a remainder of 18.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 18, we get 18.
Take the next digit (3) from the dividend and append it to 18, then repeat: 183 / 45

On to step 3:
45 can be fit into 183 4 times, resulting in a remainder of 3.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtracting 180 from 183 leaves us with 3.
Include the next digit (8) from the dividend after 3, then repeat: 38 / 45

Moving on to step 4:
45 goes into 38 0 times with a remainder of 38.
Put 0 as the next digit of the answer. 
Result so far: 40.0
The remainder is 38 after subtracting 0 from 38.
Append the next digit (5) from the dividend to 38 and continue with: 385 / 45

Let's proceed to step 5:
The number 45 fits into 385 8 times, leaving a remainder of 25.
Put 8 as the next digit of the answer. 
Result so far: 408.0
The remainder is 25 after subtracting 360 from 385.
Take the next digit (9) from the dividend and append it to 25, then repeat: 259 / 45

Advancing to step 6:
259 divided by 45 is 5 with a remainder of 34.
Put 5 as the next digit of the answer. 
Result so far: 4085.0
Deduct 225 from 259 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Going ahead to step 7:
The number 45 fits into 340 7 times, leaving a remainder of 25.
The next digit of our result is 7. 
Result so far: 4085.7
Subtract 315 from 340 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Going ahead to step 8:
45 goes into 250 5 times with a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 4085.75
Deduct 225 from 250 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Advancing to step 9:
45 can be fit into 250 5 times, resulting in a remainder of 25.
The next digit of our result is 5. 
Result so far: 4085.755
If we take 225 away from 250, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

The quotient of the division is 4085.755, and the remainder is 0.0025.