Let's divide 45344999 by 503
We want to divide 45344999 by 503.

Step 1:
If we divide 4 by 503, we get 0 and a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Append the next digit (5) from the dividend to 4 and continue with: 45 / 503

Step 2:
If we divide 45 by 503, we get 0 and a remainder of 45.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 45 to get 45.
Include the next digit (3) from the dividend after 45, then repeat: 453 / 503

Step 3:
503 can be fit into 453 0 times, resulting in a remainder of 453.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 453 after subtracting 0 from 453.
Append the next digit (4) from the dividend to 453 and continue with: 4534 / 503

Moving on to step 4:
If we divide 4534 by 503, we get 9 and a remainder of 7.
Write down 9 as next digit of the result. 
Result so far: 9.0
Subtracting 4527 from 4534 leaves us with 7.
Include the next digit (4) from the dividend after 7, then repeat: 74 / 503

Moving on to step 5:
If we divide 74 by 503, we get 0 and a remainder of 74.
Put 0 as the next digit of the answer. 
Result so far: 90.0
Subtracting 0 from 74 leaves us with 74.
Include the next digit (9) from the dividend after 74, then repeat: 749 / 503

Going ahead to step 6:
503 goes into 749 1 times with a remainder of 246.
Record the quotient 1 as the next digit in the result. 
Result so far: 901.0
Deduct 503 from 749 and we're left with 246.
Grab the next digit (9) from the dividend, add it to 246, then carry on: 2469 / 503

Step 7:
When dividing 2469 by 503, we get 4 with a remainder of 457.
Record the quotient 4 as the next digit in the result. 
Result so far: 9014.0
The remainder is 457 after subtracting 2012 from 2469.
Include the next digit (9) from the dividend after 457, then repeat: 4579 / 503

On to step 8:
When dividing 4579 by 503, we get 9 with a remainder of 52.
Use 9 as the next digit of our solution. 
Result so far: 90149.0
The remainder is 52 after subtracting 4527 from 4579.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

On to step 9:
The number 503 fits into 520 1 times, leaving a remainder of 17.
Put 1 as the next digit of the answer. 
Result so far: 90149.1
Subtract 503 from 520 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 10:
If we divide 170 by 503, we get 0 and a remainder of 170.
Use 0 as the next digit of our solution. 
Result so far: 90149.1
Deduct 0 from 170 and we're left with 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Moving on to step 11:
1700 divided by 503 is 3 with a remainder of 191.
Record the quotient 3 as the next digit in the result. 
Result so far: 90149.103
Deduct 1509 from 1700 and we're left with 191.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1910, and continue the process.

Advancing to step 12:
503 can be fit into 1910 3 times, resulting in a remainder of 401.
Record the quotient 3 as the next digit in the result. 
Result so far: 90149.1033
Deduct 1509 from 1910 and we're left with 401.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4010, and continue the process.

Our division results in 90149.1033 with a remaining 0.00401.