72255617 ÷ 63 
We want to figure out the number of times 72255617 can be divided by 63.

On to step 1:
63 goes into 7 0 times with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 63

Going ahead to step 2:
72 divided by 63 is 1 with a remainder of 9.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 63 away from 72, we end up with 9.
Append the next digit (2) from the dividend to 9 and continue with: 92 / 63

Advancing to step 3:
92 divided by 63 is 1 with a remainder of 29.
Use 1 as the next digit of our solution. 
Result so far: 11.0
If we take 63 away from 92, we end up with 29.
Include the next digit (5) from the dividend after 29, then repeat: 295 / 63

Going ahead to step 4:
63 goes into 295 4 times with a remainder of 43.
Put 4 as the next digit of the answer. 
Result so far: 114.0
If we take 252 away from 295, we end up with 43.
Take the next digit (5) from the dividend and append it to 43, then repeat: 435 / 63

Advancing to step 5:
63 can be fit into 435 6 times, resulting in a remainder of 57.
Record the quotient 6 as the next digit in the result. 
Result so far: 1146.0
If we subtract 378 from 435, we get 57.
Take the next digit (6) from the dividend and append it to 57, then repeat: 576 / 63

Going ahead to step 6:
When dividing 576 by 63, we get 9 with a remainder of 9.
Put 9 as the next digit of the answer. 
Result so far: 11469.0
Subtract 567 from 576 to get 9.
Fetch the next digit (1) from the dividend, attach it to 9 and continue: 91 / 63

Let's proceed to step 7:
If we divide 91 by 63, we get 1 and a remainder of 28.
The next digit of our result is 1. 
Result so far: 114691.0
Subtracting 63 from 91 leaves us with 28.
Append the next digit (7) from the dividend to 28 and continue with: 287 / 63

Step 8:
When dividing 287 by 63, we get 4 with a remainder of 35.
Write down 4 as next digit of the result. 
Result so far: 1146914.0
Subtract 252 from 287 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 9:
The number 63 fits into 350 5 times, leaving a remainder of 35.
The next digit of our result is 5. 
Result so far: 1146914.5
Deduct 315 from 350 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 10:
63 goes into 350 5 times with a remainder of 35.
Record the quotient 5 as the next digit in the result. 
Result so far: 1146914.55
Subtract 315 from 350 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

The final outcome is 1146914.55, with a leftover of 0.035.