Let's divide 855158 by 45
Let's see how many times 45 fits into 855158.

Going ahead to step 1:
If we divide 8 by 45, we get 0 and a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Take the next digit (5) from the dividend and append it to 8, then repeat: 85 / 45

Let's proceed to step 2:
When dividing 85 by 45, we get 1 with a remainder of 40.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 45 away from 85, we end up with 40.
Include the next digit (5) from the dividend after 40, then repeat: 405 / 45

Going ahead to step 3:
If we divide 405 by 45, we get 9 and a remainder of 0.
The number 9 becomes the next digit in our result. 
Result so far: 19.0
If we take 405 away from 405, we end up with 0.
Fetch the next digit (1) from the dividend, attach it to 0 and continue: 1 / 45

Let's proceed to step 4:
45 can be fit into 1 0 times, resulting in a remainder of 1.
The next digit of our result is 0. 
Result so far: 190.0
Subtracting 0 from 1 leaves us with 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 45

Step 5:
45 goes into 15 0 times with a remainder of 15.
Record the quotient 0 as the next digit in the result. 
Result so far: 1900.0
If we subtract 0 from 15, we get 15.
Fetch the next digit (8) from the dividend, attach it to 15 and continue: 158 / 45

Step 6:
45 can be fit into 158 3 times, resulting in a remainder of 23.
Put 3 as the next digit of the answer. 
Result so far: 19003.0
Deduct 135 from 158 and we're left with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Going ahead to step 7:
The number 45 fits into 230 5 times, leaving a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 19003.5
Subtract 225 from 230 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 8:
50 divided by 45 is 1 with a remainder of 5.
The next digit of our result is 1. 
Result so far: 19003.51
If we subtract 45 from 50, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 9:
If we divide 50 by 45, we get 1 and a remainder of 5.
The number 1 becomes the next digit in our result. 
Result so far: 19003.511
Deduct 45 from 50 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The final result is 19003.511 with a remainder of 0.0005.