136406 ÷ 80 
Our goal is to divide 136406 by 80.

On to step 1:
When dividing 1 by 80, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Take the next digit (3) from the dividend and append it to 1, then repeat: 13 / 80

Let's proceed to step 2:
If we divide 13 by 80, we get 0 and a remainder of 13.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 13 after subtracting 0 from 13.
Include the next digit (6) from the dividend after 13, then repeat: 136 / 80

Let's proceed to step 3:
The number 80 fits into 136 1 times, leaving a remainder of 56.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 80 from 136, we get 56.
Bring next digit (4) of the dividend behind the 56 and repeat the process: 564 / 80

Advancing to step 4:
80 goes into 564 7 times with a remainder of 4.
Use 7 as the next digit of our solution. 
Result so far: 17.0
Deduct 560 from 564 and we're left with 4.
Include the next digit (0) from the dividend after 4, then repeat: 40 / 80

On to step 5:
If we divide 40 by 80, we get 0 and a remainder of 40.
The next digit of our result is 0. 
Result so far: 170.0
The remainder is 40 after subtracting 0 from 40.
Grab the next digit (6) from the dividend, add it to 40, then carry on: 406 / 80

On to step 6:
If we divide 406 by 80, we get 5 and a remainder of 6.
The next digit of our result is 5. 
Result so far: 1705.0
Subtract 400 from 406 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 7:
80 can be fit into 60 0 times, resulting in a remainder of 60.
The next digit of our result is 0. 
Result so far: 1705.0
If we take 0 away from 60, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 8:
600 divided by 80 is 7 with a remainder of 40.
Write down 7 as next digit of the result. 
Result so far: 1705.07
If we take 560 away from 600, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 9:
The number 80 fits into 400 5 times, leaving a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 1705.075
Deduct 400 from 400 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 10:
If we divide 0 by 80, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 1705.075
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 11:
80 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 1705.075
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 1705.075, with a leftover of 0.0.