We look at the division of 51220717 by 100 
We're looking to find how many times 100 goes into 51220717.

Going ahead to step 1:
When dividing 5 by 100, we get 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 100

Step 2:
When dividing 51 by 100, we get 0 with a remainder of 51.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 51, we get 51.
Take the next digit (2) from the dividend and append it to 51, then repeat: 512 / 100

Going ahead to step 3:
If we divide 512 by 100, we get 5 and a remainder of 12.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
If we take 500 away from 512, we end up with 12.
Include the next digit (2) from the dividend after 12, then repeat: 122 / 100

Advancing to step 4:
122 divided by 100 is 1 with a remainder of 22.
Use 1 as the next digit of our solution. 
Result so far: 51.0
Subtract 100 from 122 to get 22.
Grab the next digit (0) from the dividend, add it to 22, then carry on: 220 / 100

Let's proceed to step 5:
100 can be fit into 220 2 times, resulting in a remainder of 20.
Record the quotient 2 as the next digit in the result. 
Result so far: 512.0
If we subtract 200 from 220, we get 20.
Include the next digit (7) from the dividend after 20, then repeat: 207 / 100

On to step 6:
207 divided by 100 is 2 with a remainder of 7.
Put 2 as the next digit of the answer. 
Result so far: 5122.0
Subtract 200 from 207 to get 7.
Bring next digit (1) of the dividend behind the 7 and repeat the process: 71 / 100

Going ahead to step 7:
The number 100 fits into 71 0 times, leaving a remainder of 71.
Put 0 as the next digit of the answer. 
Result so far: 51220.0
Subtracting 0 from 71 leaves us with 71.
Append the next digit (7) from the dividend to 71 and continue with: 717 / 100

Going ahead to step 8:
When dividing 717 by 100, we get 7 with a remainder of 17.
Put 7 as the next digit of the answer. 
Result so far: 512207.0
If we take 700 away from 717, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 9:
170 divided by 100 is 1 with a remainder of 70.
The next digit of our result is 1. 
Result so far: 512207.1
Deduct 100 from 170 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Going ahead to step 10:
100 can be fit into 700 7 times, resulting in a remainder of 0.
The number 7 becomes the next digit in our result. 
Result so far: 512207.17
If we take 700 away from 700, 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.

Moving on to step 11:
0 divided by 100 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 512207.17
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.

On to step 12:
The number 100 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 512207.17
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.

The final outcome is 512207.17, with a leftover of 0.0.