78000020 ÷ 136 
Our goal is to divide 78000020 by 136.

Going ahead to step 1:
136 goes into 7 0 times with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Fetch the next digit (8) from the dividend, attach it to 7 and continue: 78 / 136

On to step 2:
When dividing 78 by 136, we get 0 with a remainder of 78.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 78 leaves us with 78.
Fetch the next digit (0) from the dividend, attach it to 78 and continue: 780 / 136

Step 3:
136 goes into 780 5 times with a remainder of 100.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
Deduct 680 from 780 and we're left with 100.
Append the next digit (0) from the dividend to 100 and continue with: 1000 / 136

Moving on to step 4:
136 goes into 1000 7 times with a remainder of 48.
Write down 7 as next digit of the result. 
Result so far: 57.0
Subtract 952 from 1000 to get 48.
Bring next digit (0) of the dividend behind the 48 and repeat the process: 480 / 136

Step 5:
136 can be fit into 480 3 times, resulting in a remainder of 72.
Put 3 as the next digit of the answer. 
Result so far: 573.0
Deduct 408 from 480 and we're left with 72.
Bring next digit (0) of the dividend behind the 72 and repeat the process: 720 / 136

Let's proceed to step 6:
136 can be fit into 720 5 times, resulting in a remainder of 40.
The number 5 becomes the next digit in our result. 
Result so far: 5735.0
Subtract 680 from 720 to get 40.
Fetch the next digit (2) from the dividend, attach it to 40 and continue: 402 / 136

Let's proceed to step 7:
When dividing 402 by 136, we get 2 with a remainder of 130.
Record the quotient 2 as the next digit in the result. 
Result so far: 57352.0
If we subtract 272 from 402, we get 130.
Include the next digit (0) from the dividend after 130, then repeat: 1300 / 136

Going ahead to step 8:
1300 divided by 136 is 9 with a remainder of 76.
Record the quotient 9 as the next digit in the result. 
Result so far: 573529.0
The remainder is 76 after subtracting 1224 from 1300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Moving on to step 9:
136 can be fit into 760 5 times, resulting in a remainder of 80.
Record the quotient 5 as the next digit in the result. 
Result so far: 573529.5
Deduct 680 from 760 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 10:
136 can be fit into 800 5 times, resulting in a remainder of 120.
Write down 5 as next digit of the result. 
Result so far: 573529.55
If we subtract 680 from 800, we get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Our division results in 573529.55 with a remaining 0.12.