We divide 72503100 by 4
We want to figure out the number of times 72503100 can be divided by 4.

Let's proceed to step 1:
4 can be fit into 7 1 times, resulting in a remainder of 3.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 4 from 7, we get 3.
Take the next digit (2) from the dividend and append it to 3, then repeat: 32 / 4

Moving on to step 2:
When dividing 32 by 4, we get 8 with a remainder of 0.
The next digit of our result is 8. 
Result so far: 18.0
Deduct 32 from 32 and we're left with 0.
Take the next digit (5) from the dividend and append it to 0, then repeat: 5 / 4

On to step 3:
The number 4 fits into 5 1 times, leaving a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 181.0
Subtract 4 from 5 to get 1.
Include the next digit (0) from the dividend after 1, then repeat: 10 / 4

On to step 4:
4 can be fit into 10 2 times, resulting in a remainder of 2.
Put 2 as the next digit of the answer. 
Result so far: 1812.0
Deduct 8 from 10 and we're left with 2.
Grab the next digit (3) from the dividend, add it to 2, then carry on: 23 / 4

Advancing to step 5:
4 goes into 23 5 times with a remainder of 3.
The next digit of our result is 5. 
Result so far: 18125.0
If we subtract 20 from 23, we get 3.
Take the next digit (1) from the dividend and append it to 3, then repeat: 31 / 4

Let's proceed to step 6:
4 can be fit into 31 7 times, resulting in a remainder of 3.
The next digit of our result is 7. 
Result so far: 181257.0
If we take 28 away from 31, we end up with 3.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 4

Moving on to step 7:
4 goes into 30 7 times with a remainder of 2.
Use 7 as the next digit of our solution. 
Result so far: 1812577.0
Subtract 28 from 30 to get 2.
Append the next digit (0) from the dividend to 2 and continue with: 20 / 4

Going ahead to step 8:
20 divided by 4 is 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 18125775.0
If we subtract 20 from 20, we 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.

On to step 9:
If we divide 0 by 4, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 18125775.0
If we subtract 0 from 0, we 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.

Going ahead to step 10:
The number 4 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 18125775.0
If we subtract 0 from 0, we 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.

In conclusion, the division gives 18125775.0 with a balance of 0.0.