Let's divide 158388 by 39
We want to figure out the number of times 158388 can be divided by 39.

Step 1:
The number 39 fits into 1 0 times, leaving a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 39

Going ahead to step 2:
When dividing 15 by 39, we get 0 with a remainder of 15.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 15, we get 15.
Include the next digit (8) from the dividend after 15, then repeat: 158 / 39

Going ahead to step 3:
If we divide 158 by 39, we get 4 and a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
The remainder is 2 after subtracting 156 from 158.
Grab the next digit (3) from the dividend, add it to 2, then carry on: 23 / 39

Going ahead to step 4:
If we divide 23 by 39, we get 0 and a remainder of 23.
Put 0 as the next digit of the answer. 
Result so far: 40.0
Subtract 0 from 23 to get 23.
Include the next digit (8) from the dividend after 23, then repeat: 238 / 39

Going ahead to step 5:
238 divided by 39 is 6 with a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 406.0
Deduct 234 from 238 and we're left with 4.
Bring next digit (8) of the dividend behind the 4 and repeat the process: 48 / 39

On to step 6:
The number 39 fits into 48 1 times, leaving a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 4061.0
The remainder is 9 after subtracting 39 from 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 7:
90 divided by 39 is 2 with a remainder of 12.
Use 2 as the next digit of our solution. 
Result so far: 4061.2
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.

Step 8:
When dividing 120 by 39, we get 3 with a remainder of 3.
Record the quotient 3 as the next digit in the result. 
Result so far: 4061.23
Deduct 117 from 120 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 9:
39 can be fit into 30 0 times, resulting in a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 4061.23
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.

On to step 10:
The number 39 fits into 300 7 times, leaving a remainder of 27.
The next digit of our result is 7. 
Result so far: 4061.2307
Deduct 273 from 300 and we're left with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

On to step 11:
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: 4061.23076
Subtracting 234 from 270 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 12:
If we divide 360 by 39, we get 9 and a remainder of 9.
Put 9 as the next digit of the answer. 
Result so far: 4061.230769
If we take 351 away from 360, we end up with 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 13:
The number 39 fits into 90 2 times, leaving a remainder of 12.
Put 2 as the next digit of the answer. 
Result so far: 4061.2307692
If we subtract 78 from 90, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 14:
The number 39 fits into 120 3 times, leaving a remainder of 3.
Record the quotient 3 as the next digit in the result. 
Result so far: 4061.23076923
Subtracting 117 from 120 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Our division results in 4061.23076923 with a remaining 3e-09.