We look at the division of 45136 by 20 
We want to figure out the number of times 45136 can be divided by 20.

Step 1:
20 goes into 4 0 times with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Include the next digit (5) from the dividend after 4, then repeat: 45 / 20

Advancing to step 2:
20 goes into 45 2 times with a remainder of 5.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtracting 40 from 45 leaves us with 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 20

Advancing to step 3:
When dividing 51 by 20, we get 2 with a remainder of 11.
Use 2 as the next digit of our solution. 
Result so far: 22.0
Subtract 40 from 51 to get 11.
Append the next digit (3) from the dividend to 11 and continue with: 113 / 20

Advancing to step 4:
113 divided by 20 is 5 with a remainder of 13.
Put 5 as the next digit of the answer. 
Result so far: 225.0
Deduct 100 from 113 and we're left with 13.
Include the next digit (6) from the dividend after 13, then repeat: 136 / 20

Going ahead to step 5:
When dividing 136 by 20, we get 6 with a remainder of 16.
The number 6 becomes the next digit in our result. 
Result so far: 2256.0
Deduct 120 from 136 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 6:
If we divide 160 by 20, we get 8 and a remainder of 0.
Use 8 as the next digit of our solution. 
Result so far: 2256.8
If we take 160 away from 160, we end up 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 7:
The number 20 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 2256.8
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 8:
0 divided by 20 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 2256.8
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.

After the division, we end up with 2256.8 and a remainder of 0.0.