We divide 83121903 by 225
We want to figure out the number of times 83121903 can be divided by 225.

On to step 1:
225 can be fit into 8 0 times, resulting in a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Include the next digit (3) from the dividend after 8, then repeat: 83 / 225

Going ahead to step 2:
83 divided by 225 is 0 with a remainder of 83.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 83, we get 83.
Fetch the next digit (1) from the dividend, attach it to 83 and continue: 831 / 225

Moving on to step 3:
831 divided by 225 is 3 with a remainder of 156.
Write down 3 as next digit of the result. 
Result so far: 3.0
Deduct 675 from 831 and we're left with 156.
Fetch the next digit (2) from the dividend, attach it to 156 and continue: 1562 / 225

Going ahead to step 4:
The number 225 fits into 1562 6 times, leaving a remainder of 212.
Write down 6 as next digit of the result. 
Result so far: 36.0
Deduct 1350 from 1562 and we're left with 212.
Append the next digit (1) from the dividend to 212 and continue with: 2121 / 225

Step 5:
2121 divided by 225 is 9 with a remainder of 96.
Record the quotient 9 as the next digit in the result. 
Result so far: 369.0
Subtracting 2025 from 2121 leaves us with 96.
Include the next digit (9) from the dividend after 96, then repeat: 969 / 225

Advancing to step 6:
969 divided by 225 is 4 with a remainder of 69.
Use 4 as the next digit of our solution. 
Result so far: 3694.0
If we take 900 away from 969, we end up with 69.
Bring next digit (0) of the dividend behind the 69 and repeat the process: 690 / 225

Advancing to step 7:
225 goes into 690 3 times with a remainder of 15.
Record the quotient 3 as the next digit in the result. 
Result so far: 36943.0
If we take 675 away from 690, we end up with 15.
Include the next digit (3) from the dividend after 15, then repeat: 153 / 225

On to step 8:
When dividing 153 by 225, we get 0 with a remainder of 153.
Record the quotient 0 as the next digit in the result. 
Result so far: 369430.0
Deduct 0 from 153 and we're left with 153.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1530, and continue the process.

Step 9:
When dividing 1530 by 225, we get 6 with a remainder of 180.
Write down 6 as next digit of the result. 
Result so far: 369430.6
Subtract 1350 from 1530 to get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Let's proceed to step 10:
The number 225 fits into 1800 8 times, leaving a remainder of 0.
Put 8 as the next digit of the answer. 
Result so far: 369430.68
Subtracting 1800 from 1800 leaves us 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.

Advancing to step 11:
0 divided by 225 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 369430.68
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.

Let's proceed to step 12:
If we divide 0 by 225, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 369430.68
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.

The final result is 369430.68 with a remainder of 0.0.