Let's divide 859912 by 13
We want to figure out the number of times 859912 can be divided by 13.

Step 1:
The number 13 fits into 8 0 times, leaving a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (5) from the dividend after 8, then repeat: 85 / 13

Going ahead to step 2:
If we divide 85 by 13, we get 6 and a remainder of 7.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Subtracting 78 from 85 leaves us with 7.
Fetch the next digit (9) from the dividend, attach it to 7 and continue: 79 / 13

On to step 3:
The number 13 fits into 79 6 times, leaving a remainder of 1.
The number 6 becomes the next digit in our result. 
Result so far: 66.0
Subtracting 78 from 79 leaves us with 1.
Take the next digit (9) from the dividend and append it to 1, then repeat: 19 / 13

On to step 4:
19 divided by 13 is 1 with a remainder of 6.
The next digit of our result is 1. 
Result so far: 661.0
The remainder is 6 after subtracting 13 from 19.
Include the next digit (1) from the dividend after 6, then repeat: 61 / 13

Going ahead to step 5:
61 divided by 13 is 4 with a remainder of 9.
Use 4 as the next digit of our solution. 
Result so far: 6614.0
If we subtract 52 from 61, we get 9.
Take the next digit (2) from the dividend and append it to 9, then repeat: 92 / 13

Going ahead to step 6:
92 divided by 13 is 7 with a remainder of 1.
The number 7 becomes the next digit in our result. 
Result so far: 66147.0
Subtract 91 from 92 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 7:
When dividing 10 by 13, we get 0 with a remainder of 10.
The next digit of our result is 0. 
Result so far: 66147.0
If we subtract 0 from 10, we 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.

Let's proceed to step 8:
13 can be fit into 100 7 times, resulting in a remainder of 9.
Put 7 as the next digit of the answer. 
Result so far: 66147.07
If we subtract 91 from 100, 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.

On to step 9:
13 goes into 90 6 times with a remainder of 12.
Put 6 as the next digit of the answer. 
Result so far: 66147.076
Subtract 78 from 90 to 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.

On to step 10:
If we divide 120 by 13, we get 9 and a remainder of 3.
The number 9 becomes the next digit in our result. 
Result so far: 66147.0769
The remainder is 3 after subtracting 117 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 11:
13 goes into 30 2 times with a remainder of 4.
The next digit of our result is 2. 
Result so far: 66147.07692
Deduct 26 from 30 and we're left 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.

Advancing to step 12:
When dividing 40 by 13, we get 3 with a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 66147.076923
Subtracting 39 from 40 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 13:
13 can be fit into 10 0 times, resulting in a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 66147.076923
Deduct 0 from 10 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 14:
If we divide 100 by 13, we get 7 and a remainder of 9.
Use 7 as the next digit of our solution. 
Result so far: 66147.07692307
Subtract 91 from 100 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.

The final result is 66147.07692307 with a remainder of 9e-09.