We're dividing 391685 by 45 
We want to divide 391685 by 45.

Advancing to step 1:
When dividing 3 by 45, we get 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 45

On to step 2:
The number 45 fits into 39 0 times, leaving a remainder of 39.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 39 and we're left with 39.
Grab the next digit (1) from the dividend, add it to 39, then carry on: 391 / 45

Moving on to step 3:
45 can be fit into 391 8 times, resulting in a remainder of 31.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Subtract 360 from 391 to get 31.
Grab the next digit (6) from the dividend, add it to 31, then carry on: 316 / 45

Going ahead to step 4:
45 goes into 316 7 times with a remainder of 1.
Record the quotient 7 as the next digit in the result. 
Result so far: 87.0
Subtracting 315 from 316 leaves us with 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 45

Let's proceed to step 5:
18 divided by 45 is 0 with a remainder of 18.
Use 0 as the next digit of our solution. 
Result so far: 870.0
Deduct 0 from 18 and we're left with 18.
Grab the next digit (5) from the dividend, add it to 18, then carry on: 185 / 45

Going ahead to step 6:
The number 45 fits into 185 4 times, leaving a remainder of 5.
Use 4 as the next digit of our solution. 
Result so far: 8704.0
If we take 180 away from 185, we end up 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.

On to step 7:
50 divided by 45 is 1 with a remainder of 5.
Use 1 as the next digit of our solution. 
Result so far: 8704.1
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.

Let's proceed to step 8:
The number 45 fits into 50 1 times, leaving a remainder of 5.
The number 1 becomes the next digit in our result. 
Result so far: 8704.11
Subtract 45 from 50 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.

The final result is 8704.11 with a remainder of 0.005.