81337300 ÷ 503 
We want to figure out the number of times 81337300 can be divided by 503.

On to step 1:
503 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (1) from the dividend, add it to 8, then carry on: 81 / 503

On to step 2:
If we divide 81 by 503, we get 0 and a remainder of 81.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 81, we end up with 81.
Include the next digit (3) from the dividend after 81, then repeat: 813 / 503

Advancing to step 3:
503 can be fit into 813 1 times, resulting in a remainder of 310.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 503 away from 813, we end up with 310.
Fetch the next digit (3) from the dividend, attach it to 310 and continue: 3103 / 503

Advancing to step 4:
3103 divided by 503 is 6 with a remainder of 85.
Use 6 as the next digit of our solution. 
Result so far: 16.0
If we subtract 3018 from 3103, we get 85.
Bring next digit (7) of the dividend behind the 85 and repeat the process: 857 / 503

Let's proceed to step 5:
503 goes into 857 1 times with a remainder of 354.
Write down 1 as next digit of the result. 
Result so far: 161.0
The remainder is 354 after subtracting 503 from 857.
Bring next digit (3) of the dividend behind the 354 and repeat the process: 3543 / 503

On to step 6:
When dividing 3543 by 503, we get 7 with a remainder of 22.
Write down 7 as next digit of the result. 
Result so far: 1617.0
The remainder is 22 after subtracting 3521 from 3543.
Append the next digit (0) from the dividend to 22 and continue with: 220 / 503

Let's proceed to step 7:
503 goes into 220 0 times with a remainder of 220.
The next digit of our result is 0. 
Result so far: 16170.0
Subtract 0 from 220 to get 220.
Bring next digit (0) of the dividend behind the 220 and repeat the process: 2200 / 503

Moving on to step 8:
If we divide 2200 by 503, we get 4 and a remainder of 188.
Write down 4 as next digit of the result. 
Result so far: 161704.0
Deduct 2012 from 2200 and we're left with 188.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1880, and continue the process.

Advancing to step 9:
1880 divided by 503 is 3 with a remainder of 371.
The next digit of our result is 3. 
Result so far: 161704.3
If we subtract 1509 from 1880, we get 371.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3710, and continue the process.

Step 10:
503 goes into 3710 7 times with a remainder of 189.
Record the quotient 7 as the next digit in the result. 
Result so far: 161704.37
Deduct 3521 from 3710 and we're left with 189.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1890, and continue the process.

Let's proceed to step 11:
503 can be fit into 1890 3 times, resulting in a remainder of 381.
The next digit of our result is 3. 
Result so far: 161704.373
Subtracting 1509 from 1890 leaves us with 381.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3810, and continue the process.

Moving on to step 12:
503 goes into 3810 7 times with a remainder of 289.
The number 7 becomes the next digit in our result. 
Result so far: 161704.3737
If we subtract 3521 from 3810, we get 289.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2890, and continue the process.

On to step 13:
If we divide 2890 by 503, we get 5 and a remainder of 375.
Use 5 as the next digit of our solution. 
Result so far: 161704.37375
If we take 2515 away from 2890, we end up with 375.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

On to step 14:
3750 divided by 503 is 7 with a remainder of 229.
Put 7 as the next digit of the answer. 
Result so far: 161704.373757
Deduct 3521 from 3750 and we're left with 229.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2290, and continue the process.

Advancing to step 15:
503 goes into 2290 4 times with a remainder of 278.
Write down 4 as next digit of the result. 
Result so far: 161704.3737574
Subtract 2012 from 2290 to get 278.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2780, and continue the process.

Advancing to step 16:
When dividing 2780 by 503, we get 5 with a remainder of 265.
Put 5 as the next digit of the answer. 
Result so far: 161704.37375745
The remainder is 265 after subtracting 2515 from 2780.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2650, and continue the process.

The final result is 161704.37375745 with a remainder of 2.65e-07.