77487707 ÷ 503 
The aim is to understand the frequency of 503 in 77487707.

Moving on to step 1:
If we divide 7 by 503, we get 0 and a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Bring next digit (7) of the dividend behind the 7 and repeat the process: 77 / 503

Let's proceed to step 2:
The number 503 fits into 77 0 times, leaving a remainder of 77.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 77, we get 77.
Take the next digit (4) from the dividend and append it to 77, then repeat: 774 / 503

Moving on to step 3:
503 can be fit into 774 1 times, resulting in a remainder of 271.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 503 from 774 leaves us with 271.
Fetch the next digit (8) from the dividend, attach it to 271 and continue: 2718 / 503

Advancing to step 4:
When dividing 2718 by 503, we get 5 with a remainder of 203.
Put 5 as the next digit of the answer. 
Result so far: 15.0
If we subtract 2515 from 2718, we get 203.
Append the next digit (7) from the dividend to 203 and continue with: 2037 / 503

Let's proceed to step 5:
503 goes into 2037 4 times with a remainder of 25.
Use 4 as the next digit of our solution. 
Result so far: 154.0
Subtract 2012 from 2037 to get 25.
Include the next digit (7) from the dividend after 25, then repeat: 257 / 503

Let's proceed to step 6:
257 divided by 503 is 0 with a remainder of 257.
Use 0 as the next digit of our solution. 
Result so far: 1540.0
Deduct 0 from 257 and we're left with 257.
Append the next digit (0) from the dividend to 257 and continue with: 2570 / 503

Step 7:
The number 503 fits into 2570 5 times, leaving a remainder of 55.
Use 5 as the next digit of our solution. 
Result so far: 15405.0
Deduct 2515 from 2570 and we're left with 55.
Take the next digit (7) from the dividend and append it to 55, then repeat: 557 / 503

Step 8:
503 can be fit into 557 1 times, resulting in a remainder of 54.
Write down 1 as next digit of the result. 
Result so far: 154051.0
If we take 503 away from 557, we end up with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Moving on to step 9:
540 divided by 503 is 1 with a remainder of 37.
Put 1 as the next digit of the answer. 
Result so far: 154051.1
The remainder is 37 after subtracting 503 from 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Step 10:
503 can be fit into 370 0 times, resulting in a remainder of 370.
Write down 0 as next digit of the result. 
Result so far: 154051.1
If we subtract 0 from 370, we get 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3700, and continue the process.

Let's proceed to step 11:
503 goes into 3700 7 times with a remainder of 179.
The next digit of our result is 7. 
Result so far: 154051.107
The remainder is 179 after subtracting 3521 from 3700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1790, and continue the process.

Advancing to step 12:
503 goes into 1790 3 times with a remainder of 281.
The number 3 becomes the next digit in our result. 
Result so far: 154051.1073
If we take 1509 away from 1790, we end up with 281.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2810, and continue the process.

Step 13:
When dividing 2810 by 503, we get 5 with a remainder of 295.
The next digit of our result is 5. 
Result so far: 154051.10735
Subtract 2515 from 2810 to get 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 14:
The number 503 fits into 2950 5 times, leaving a remainder of 435.
The number 5 becomes the next digit in our result. 
Result so far: 154051.107355
The remainder is 435 after subtracting 2515 from 2950.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4350, and continue the process.

Our division results in 154051.107355 with a remaining 4.35e-05.