We're dividing 170749 by 45 
We're looking to find how many times 45 goes into 170749.

Step 1:
If we divide 1 by 45, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Fetch the next digit (7) from the dividend, attach it to 1 and continue: 17 / 45

Moving on to step 2:
45 can be fit into 17 0 times, resulting in a remainder of 17.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 17, we get 17.
Append the next digit (0) from the dividend to 17 and continue with: 170 / 45

Let's proceed to step 3:
45 can be fit into 170 3 times, resulting in a remainder of 35.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we subtract 135 from 170, we get 35.
Fetch the next digit (7) from the dividend, attach it to 35 and continue: 357 / 45

Going ahead to step 4:
45 can be fit into 357 7 times, resulting in a remainder of 42.
Record the quotient 7 as the next digit in the result. 
Result so far: 37.0
If we take 315 away from 357, we end up with 42.
Grab the next digit (4) from the dividend, add it to 42, then carry on: 424 / 45

On to step 5:
The number 45 fits into 424 9 times, leaving a remainder of 19.
Write down 9 as next digit of the result. 
Result so far: 379.0
Deduct 405 from 424 and we're left with 19.
Include the next digit (9) from the dividend after 19, then repeat: 199 / 45

Going ahead to step 6:
The number 45 fits into 199 4 times, leaving a remainder of 19.
Write down 4 as next digit of the result. 
Result so far: 3794.0
The remainder is 19 after subtracting 180 from 199.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 7:
When dividing 190 by 45, we get 4 with a remainder of 10.
Record the quotient 4 as the next digit in the result. 
Result so far: 3794.4
Subtracting 180 from 190 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 8:
The number 45 fits into 100 2 times, leaving a remainder of 10.
The number 2 becomes the next digit in our result. 
Result so far: 3794.42
If we take 90 away from 100, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 9:
If we divide 100 by 45, we get 2 and a remainder of 10.
The next digit of our result is 2. 
Result so far: 3794.422
Subtract 90 from 100 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Our division results in 3794.422 with a remaining 0.001.