578445 ÷ 39 
We're looking to find how many times 39 goes into 578445.

Step 1:
The number 39 fits into 5 0 times, leaving a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Grab the next digit (7) from the dividend, add it to 5, then carry on: 57 / 39

Moving on to step 2:
39 goes into 57 1 times with a remainder of 18.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 39 from 57 leaves us with 18.
Fetch the next digit (8) from the dividend, attach it to 18 and continue: 188 / 39

Step 3:
When dividing 188 by 39, we get 4 with a remainder of 32.
The next digit of our result is 4. 
Result so far: 14.0
The remainder is 32 after subtracting 156 from 188.
Include the next digit (4) from the dividend after 32, then repeat: 324 / 39

Advancing to step 4:
When dividing 324 by 39, we get 8 with a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 148.0
Subtracting 312 from 324 leaves us with 12.
Take the next digit (4) from the dividend and append it to 12, then repeat: 124 / 39

Advancing to step 5:
39 goes into 124 3 times with a remainder of 7.
Write down 3 as next digit of the result. 
Result so far: 1483.0
Subtract 117 from 124 to get 7.
Bring next digit (5) of the dividend behind the 7 and repeat the process: 75 / 39

Going ahead to step 6:
39 goes into 75 1 times with a remainder of 36.
The next digit of our result is 1. 
Result so far: 14831.0
Subtracting 39 from 75 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 7:
When dividing 360 by 39, we get 9 with a remainder of 9.
Write down 9 as next digit of the result. 
Result so far: 14831.9
Subtract 351 from 360 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 8:
When dividing 90 by 39, we get 2 with a remainder of 12.
Put 2 as the next digit of the answer. 
Result so far: 14831.92
The remainder is 12 after subtracting 78 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 9:
39 goes into 120 3 times with a remainder of 3.
The number 3 becomes the next digit in our result. 
Result so far: 14831.923
Subtract 117 from 120 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 10:
30 divided by 39 is 0 with a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 14831.923
If we subtract 0 from 30, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 11:
If we divide 300 by 39, we get 7 and a remainder of 27.
The next digit of our result is 7. 
Result so far: 14831.92307
The remainder is 27 after subtracting 273 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Let's proceed to step 12:
When dividing 270 by 39, we get 6 with a remainder of 36.
The number 6 becomes the next digit in our result. 
Result so far: 14831.923076
Subtract 234 from 270 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 13:
39 can be fit into 360 9 times, resulting in a remainder of 9.
Write down 9 as next digit of the result. 
Result so far: 14831.9230769
If we subtract 351 from 360, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 14:
The number 39 fits into 90 2 times, leaving a remainder of 12.
Use 2 as the next digit of our solution. 
Result so far: 14831.92307692
Deduct 78 from 90 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final outcome is 14831.92307692, with a leftover of 1.2e-08.