We look at the division of 73350773 by 503 
The aim is to understand the frequency of 503 in 73350773.

Moving on to step 1:
When dividing 7 by 503, we get 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Append the next digit (3) from the dividend to 7 and continue with: 73 / 503

Let's proceed to step 2:
If we divide 73 by 503, we get 0 and a remainder of 73.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 73 leaves us with 73.
Take the next digit (3) from the dividend and append it to 73, then repeat: 733 / 503

Moving on to step 3:
503 can be fit into 733 1 times, resulting in a remainder of 230.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 503 from 733 and we're left with 230.
Fetch the next digit (5) from the dividend, attach it to 230 and continue: 2305 / 503

On to step 4:
503 goes into 2305 4 times with a remainder of 293.
Put 4 as the next digit of the answer. 
Result so far: 14.0
Deduct 2012 from 2305 and we're left with 293.
Take the next digit (0) from the dividend and append it to 293, then repeat: 2930 / 503

Going ahead to step 5:
503 can be fit into 2930 5 times, resulting in a remainder of 415.
Record the quotient 5 as the next digit in the result. 
Result so far: 145.0
The remainder is 415 after subtracting 2515 from 2930.
Include the next digit (7) from the dividend after 415, then repeat: 4157 / 503

Step 6:
The number 503 fits into 4157 8 times, leaving a remainder of 133.
The number 8 becomes the next digit in our result. 
Result so far: 1458.0
The remainder is 133 after subtracting 4024 from 4157.
Fetch the next digit (7) from the dividend, attach it to 133 and continue: 1337 / 503

Step 7:
The number 503 fits into 1337 2 times, leaving a remainder of 331.
Put 2 as the next digit of the answer. 
Result so far: 14582.0
Subtract 1006 from 1337 to get 331.
Include the next digit (3) from the dividend after 331, then repeat: 3313 / 503

Advancing to step 8:
503 can be fit into 3313 6 times, resulting in a remainder of 295.
Put 6 as the next digit of the answer. 
Result so far: 145826.0
If we take 3018 away from 3313, we end up with 295.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2950, and continue the process.

Step 9:
The number 503 fits into 2950 5 times, leaving a remainder of 435.
The next digit of our result is 5. 
Result so far: 145826.5
If we take 2515 away from 2950, we end up with 435.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4350, and continue the process.

Advancing to step 10:
When dividing 4350 by 503, we get 8 with a remainder of 326.
Use 8 as the next digit of our solution. 
Result so far: 145826.58
Subtracting 4024 from 4350 leaves us with 326.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3260, and continue the process.

Going ahead to step 11:
If we divide 3260 by 503, we get 6 and a remainder of 242.
The next digit of our result is 6. 
Result so far: 145826.586
If we subtract 3018 from 3260, we get 242.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2420, and continue the process.

Let's proceed to step 12:
503 can be fit into 2420 4 times, resulting in a remainder of 408.
Use 4 as the next digit of our solution. 
Result so far: 145826.5864
Deduct 2012 from 2420 and we're left with 408.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4080, and continue the process.

Step 13:
503 goes into 4080 8 times with a remainder of 56.
The number 8 becomes the next digit in our result. 
Result so far: 145826.58648
If we take 4024 away from 4080, we end up with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Advancing to step 14:
If we divide 560 by 503, we get 1 and a remainder of 57.
Write down 1 as next digit of the result. 
Result so far: 145826.586481
Subtract 503 from 560 to get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

On to step 15:
503 goes into 570 1 times with a remainder of 67.
Write down 1 as next digit of the result. 
Result so far: 145826.5864811
If we take 503 away from 570, we end up with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

In conclusion, the division gives 145826.5864811 with a balance of 6.7e-07.