We're dividing 39389242 by 45 
We want to divide 39389242 by 45.

Advancing to step 1:
When dividing 3 by 45, we get 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Include the next digit (9) from the dividend after 3, then repeat: 39 / 45

Let's proceed to step 2:
If we divide 39 by 45, we get 0 and a remainder of 39.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 39, we end up with 39.
Fetch the next digit (3) from the dividend, attach it to 39 and continue: 393 / 45

Going ahead to step 3:
The number 45 fits into 393 8 times, leaving a remainder of 33.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Subtracting 360 from 393 leaves us with 33.
Append the next digit (8) from the dividend to 33 and continue with: 338 / 45

Let's proceed to step 4:
The number 45 fits into 338 7 times, leaving a remainder of 23.
The next digit of our result is 7. 
Result so far: 87.0
If we take 315 away from 338, we end up with 23.
Bring next digit (9) of the dividend behind the 23 and repeat the process: 239 / 45

Let's proceed to step 5:
239 divided by 45 is 5 with a remainder of 14.
Record the quotient 5 as the next digit in the result. 
Result so far: 875.0
Subtract 225 from 239 to get 14.
Take the next digit (2) from the dividend and append it to 14, then repeat: 142 / 45

Advancing to step 6:
45 can be fit into 142 3 times, resulting in a remainder of 7.
The number 3 becomes the next digit in our result. 
Result so far: 8753.0
If we subtract 135 from 142, we get 7.
Bring next digit (4) of the dividend behind the 7 and repeat the process: 74 / 45

Let's proceed to step 7:
45 can be fit into 74 1 times, resulting in a remainder of 29.
Use 1 as the next digit of our solution. 
Result so far: 87531.0
Subtracting 45 from 74 leaves us with 29.
Grab the next digit (2) from the dividend, add it to 29, then carry on: 292 / 45

Let's proceed to step 8:
The number 45 fits into 292 6 times, leaving a remainder of 22.
The next digit of our result is 6. 
Result so far: 875316.0
Subtract 270 from 292 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 9:
The number 45 fits into 220 4 times, leaving a remainder of 40.
Write down 4 as next digit of the result. 
Result so far: 875316.4
The remainder is 40 after subtracting 180 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 10:
If we divide 400 by 45, we get 8 and a remainder of 40.
Record the quotient 8 as the next digit in the result. 
Result so far: 875316.48
Deduct 360 from 400 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 11:
400 divided by 45 is 8 with a remainder of 40.
Record the quotient 8 as the next digit in the result. 
Result so far: 875316.488
Subtract 360 from 400 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The final outcome is 875316.488, with a leftover of 0.004.