We're dividing 135689 by 12 
Let's see how many times 12 fits into 135689.

Let's proceed to step 1:
12 goes into 1 0 times with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 12

Advancing to step 2:
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: 1.0
Subtract 12 from 13 to get 1.
Grab the next digit (5) from the dividend, add it to 1, then carry on: 15 / 12

Moving on to step 3:
When dividing 15 by 12, we get 1 with a remainder of 3.
Put 1 as the next digit of the answer. 
Result so far: 11.0
Deduct 12 from 15 and we're left with 3.
Append the next digit (6) from the dividend to 3 and continue with: 36 / 12

Advancing to step 4:
When dividing 36 by 12, we get 3 with a remainder of 0.
Put 3 as the next digit of the answer. 
Result so far: 113.0
Subtract 36 from 36 to get 0.
Include the next digit (8) from the dividend after 0, then repeat: 8 / 12

Step 5:
The number 12 fits into 8 0 times, leaving a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 1130.0
If we subtract 0 from 8, we get 8.
Take the next digit (9) from the dividend and append it to 8, then repeat: 89 / 12

Going ahead to step 6:
12 goes into 89 7 times with a remainder of 5.
The number 7 becomes the next digit in our result. 
Result so far: 11307.0
Subtracting 84 from 89 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 7:
If we divide 50 by 12, we get 4 and a remainder of 2.
The next digit of our result is 4. 
Result so far: 11307.4
Subtract 48 from 50 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 8:
12 goes into 20 1 times with a remainder of 8.
Record the quotient 1 as the next digit in the result. 
Result so far: 11307.41
The remainder is 8 after subtracting 12 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 9:
If we divide 80 by 12, we get 6 and a remainder of 8.
Write down 6 as next digit of the result. 
Result so far: 11307.416
Deduct 72 from 80 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 10:
12 goes into 80 6 times with a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 11307.4166
Subtracting 72 from 80 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Our division results in 11307.4166 with a remaining 8e-05.