Let's divide 586939 by 12
Let's see how many times 12 fits into 586939.

On to step 1:
The number 12 fits into 5 0 times, leaving a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Take the next digit (8) from the dividend and append it to 5, then repeat: 58 / 12

Advancing to step 2:
58 divided by 12 is 4 with a remainder of 10.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Subtract 48 from 58 to get 10.
Bring next digit (6) of the dividend behind the 10 and repeat the process: 106 / 12

Moving on to step 3:
The number 12 fits into 106 8 times, leaving a remainder of 10.
The next digit of our result is 8. 
Result so far: 48.0
If we subtract 96 from 106, we get 10.
Bring next digit (9) of the dividend behind the 10 and repeat the process: 109 / 12

Step 4:
12 goes into 109 9 times with a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 489.0
If we subtract 108 from 109, we get 1.
Include the next digit (3) from the dividend after 1, then repeat: 13 / 12

Let's proceed to step 5:
If we divide 13 by 12, we get 1 and a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 4891.0
The remainder is 1 after subtracting 12 from 13.
Fetch the next digit (9) from the dividend, attach it to 1 and continue: 19 / 12

Going ahead to step 6:
12 goes into 19 1 times with a remainder of 7.
Put 1 as the next digit of the answer. 
Result so far: 48911.0
If we subtract 12 from 19, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 7:
If we divide 70 by 12, we get 5 and a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 48911.5
Subtract 60 from 70 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 8:
100 divided by 12 is 8 with a remainder of 4.
The next digit of our result is 8. 
Result so far: 48911.58
If we subtract 96 from 100, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 9:
40 divided by 12 is 3 with a remainder of 4.
Write down 3 as next digit of the result. 
Result so far: 48911.583
Subtracting 36 from 40 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 10:
If we divide 40 by 12, we get 3 and a remainder of 4.
Record the quotient 3 as the next digit in the result. 
Result so far: 48911.5833
Subtracting 36 from 40 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The final outcome is 48911.5833, with a leftover of 4e-05.