We're dividing 831239 by 45 
We're looking to find how many times 45 goes into 831239.

Advancing to step 1:
45 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Append the next digit (3) from the dividend to 8 and continue with: 83 / 45

Advancing to step 2:
The number 45 fits into 83 1 times, leaving a remainder of 38.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 45 from 83 leaves us with 38.
Include the next digit (1) from the dividend after 38, then repeat: 381 / 45

Going ahead to step 3:
45 can be fit into 381 8 times, resulting in a remainder of 21.
Put 8 as the next digit of the answer. 
Result so far: 18.0
If we take 360 away from 381, we end up with 21.
Append the next digit (2) from the dividend to 21 and continue with: 212 / 45

Let's proceed to step 4:
If we divide 212 by 45, we get 4 and a remainder of 32.
Write down 4 as next digit of the result. 
Result so far: 184.0
Deduct 180 from 212 and we're left with 32.
Include the next digit (3) from the dividend after 32, then repeat: 323 / 45

Step 5:
If we divide 323 by 45, we get 7 and a remainder of 8.
The next digit of our result is 7. 
Result so far: 1847.0
Subtract 315 from 323 to get 8.
Bring next digit (9) of the dividend behind the 8 and repeat the process: 89 / 45

Advancing to step 6:
45 goes into 89 1 times with a remainder of 44.
Use 1 as the next digit of our solution. 
Result so far: 18471.0
If we take 45 away from 89, we end up with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Advancing to step 7:
45 goes into 440 9 times with a remainder of 35.
Use 9 as the next digit of our solution. 
Result so far: 18471.9
Deduct 405 from 440 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 8:
45 can be fit into 350 7 times, resulting in a remainder of 35.
Write down 7 as next digit of the result. 
Result so far: 18471.97
The remainder is 35 after subtracting 315 from 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Let's proceed to step 9:
When dividing 350 by 45, we get 7 with a remainder of 35.
The number 7 becomes the next digit in our result. 
Result so far: 18471.977
If we subtract 315 from 350, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

The quotient of the division is 18471.977, and the remainder is 0.0035.