Let's divide 51364603 by 20
We want to figure out the number of times 51364603 can be divided by 20.

Going ahead to step 1:
When dividing 5 by 20, we get 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 20

Going ahead to step 2:
20 goes into 51 2 times with a remainder of 11.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 40 from 51 and we're left with 11.
Include the next digit (3) from the dividend after 11, then repeat: 113 / 20

Going ahead to step 3:
20 goes into 113 5 times with a remainder of 13.
Use 5 as the next digit of our solution. 
Result so far: 25.0
The remainder is 13 after subtracting 100 from 113.
Fetch the next digit (6) from the dividend, attach it to 13 and continue: 136 / 20

Going ahead to step 4:
If we divide 136 by 20, we get 6 and a remainder of 16.
Use 6 as the next digit of our solution. 
Result so far: 256.0
Subtracting 120 from 136 leaves us with 16.
Fetch the next digit (4) from the dividend, attach it to 16 and continue: 164 / 20

Advancing to step 5:
The number 20 fits into 164 8 times, leaving a remainder of 4.
The next digit of our result is 8. 
Result so far: 2568.0
If we take 160 away from 164, we end up with 4.
Fetch the next digit (6) from the dividend, attach it to 4 and continue: 46 / 20

Step 6:
20 can be fit into 46 2 times, resulting in a remainder of 6.
Write down 2 as next digit of the result. 
Result so far: 25682.0
Deduct 40 from 46 and we're left with 6.
Fetch the next digit (0) from the dividend, attach it to 6 and continue: 60 / 20

Step 7:
When dividing 60 by 20, we get 3 with a remainder of 0.
The next digit of our result is 3. 
Result so far: 256823.0
If we subtract 60 from 60, we get 0.
Fetch the next digit (3) from the dividend, attach it to 0 and continue: 3 / 20

Moving on to step 8:
3 divided by 20 is 0 with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 2568230.0
Subtracting 0 from 3 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 9:
20 goes into 30 1 times with a remainder of 10.
Write down 1 as next digit of the result. 
Result so far: 2568230.1
Deduct 20 from 30 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.

Going ahead to step 10:
If we divide 100 by 20, we get 5 and a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 2568230.15
Subtract 100 from 100 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.

Moving on to step 11:
0 divided by 20 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 2568230.15
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.

Moving on to step 12:
If we divide 0 by 20, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 2568230.15
If we take 0 away from 0, 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.

After the division, we end up with 2568230.15 and a remainder of 0.0.