We look at the division of 450189 by 86 
Let's see how many times 86 fits into 450189.

Let's proceed to step 1:
86 goes into 4 0 times with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Grab the next digit (5) from the dividend, add it to 4, then carry on: 45 / 86

Going ahead to step 2:
If we divide 45 by 86, we get 0 and a remainder of 45.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 45, we end up with 45.
Append the next digit (0) from the dividend to 45 and continue with: 450 / 86

Step 3:
86 can be fit into 450 5 times, resulting in a remainder of 20.
Use 5 as the next digit of our solution. 
Result so far: 5.0
The remainder is 20 after subtracting 430 from 450.
Append the next digit (1) from the dividend to 20 and continue with: 201 / 86

Moving on to step 4:
86 goes into 201 2 times with a remainder of 29.
Write down 2 as next digit of the result. 
Result so far: 52.0
If we subtract 172 from 201, we get 29.
Fetch the next digit (8) from the dividend, attach it to 29 and continue: 298 / 86

Let's proceed to step 5:
When dividing 298 by 86, we get 3 with a remainder of 40.
Write down 3 as next digit of the result. 
Result so far: 523.0
Subtracting 258 from 298 leaves us with 40.
Fetch the next digit (9) from the dividend, attach it to 40 and continue: 409 / 86

On to step 6:
The number 86 fits into 409 4 times, leaving a remainder of 65.
Write down 4 as next digit of the result. 
Result so far: 5234.0
The remainder is 65 after subtracting 344 from 409.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Let's proceed to step 7:
650 divided by 86 is 7 with a remainder of 48.
The number 7 becomes the next digit in our result. 
Result so far: 5234.7
Subtracting 602 from 650 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 8:
480 divided by 86 is 5 with a remainder of 50.
Write down 5 as next digit of the result. 
Result so far: 5234.75
Deduct 430 from 480 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 9:
86 can be fit into 500 5 times, resulting in a remainder of 70.
The next digit of our result is 5. 
Result so far: 5234.755
Subtracting 430 from 500 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

The quotient of the division is 5234.755, and the remainder is 0.007.