We divide 139590 by 45
Let's see how many times 45 fits into 139590.

Going ahead to step 1:
When dividing 1 by 45, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Fetch the next digit (3) from the dividend, attach it to 1 and continue: 13 / 45

Step 2:
The number 45 fits into 13 0 times, leaving a remainder of 13.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 13 leaves us with 13.
Bring next digit (9) of the dividend behind the 13 and repeat the process: 139 / 45

Advancing to step 3:
The number 45 fits into 139 3 times, leaving a remainder of 4.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we take 135 away from 139, we end up with 4.
Append the next digit (5) from the dividend to 4 and continue with: 45 / 45

Step 4:
45 divided by 45 is 1 with a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 31.0
If we subtract 45 from 45, we get 0.
Bring next digit (9) of the dividend behind the 0 and repeat the process: 9 / 45

On to step 5:
45 can be fit into 9 0 times, resulting in a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 310.0
Subtracting 0 from 9 leaves us with 9.
Grab the next digit (0) from the dividend, add it to 9, then carry on: 90 / 45

Step 6:
90 divided by 45 is 2 with a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 3102.0
Subtracting 90 from 90 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 7:
45 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 3102.0
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 8:
When dividing 0 by 45, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 3102.0
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 3102.0 with a remainder of 0.0.