We're dividing 81903373 by 688 
The aim is to understand the frequency of 688 in 81903373.

Going ahead to step 1:
The number 688 fits into 8 0 times, leaving a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Append the next digit (1) from the dividend to 8 and continue with: 81 / 688

Moving on to step 2:
688 can be fit into 81 0 times, resulting in a remainder of 81.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 81 to get 81.
Bring next digit (9) of the dividend behind the 81 and repeat the process: 819 / 688

Advancing to step 3:
688 goes into 819 1 times with a remainder of 131.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 688 from 819 leaves us with 131.
Append the next digit (0) from the dividend to 131 and continue with: 1310 / 688

Let's proceed to step 4:
When dividing 1310 by 688, we get 1 with a remainder of 622.
Put 1 as the next digit of the answer. 
Result so far: 11.0
Subtracting 688 from 1310 leaves us with 622.
Append the next digit (3) from the dividend to 622 and continue with: 6223 / 688

Step 5:
The number 688 fits into 6223 9 times, leaving a remainder of 31.
Use 9 as the next digit of our solution. 
Result so far: 119.0
Subtracting 6192 from 6223 leaves us with 31.
Append the next digit (3) from the dividend to 31 and continue with: 313 / 688

Let's proceed to step 6:
313 divided by 688 is 0 with a remainder of 313.
Write down 0 as next digit of the result. 
Result so far: 1190.0
Subtracting 0 from 313 leaves us with 313.
Bring next digit (7) of the dividend behind the 313 and repeat the process: 3137 / 688

Going ahead to step 7:
688 goes into 3137 4 times with a remainder of 385.
Record the quotient 4 as the next digit in the result. 
Result so far: 11904.0
If we take 2752 away from 3137, we end up with 385.
Bring next digit (3) of the dividend behind the 385 and repeat the process: 3853 / 688

Going ahead to step 8:
688 can be fit into 3853 5 times, resulting in a remainder of 413.
The next digit of our result is 5. 
Result so far: 119045.0
The remainder is 413 after subtracting 3440 from 3853.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4130, and continue the process.

Let's proceed to step 9:
If we divide 4130 by 688, we get 6 and a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 119045.6
Subtracting 4128 from 4130 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 10:
The number 688 fits into 20 0 times, leaving a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 119045.6
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 11:
The number 688 fits into 200 0 times, leaving a remainder of 200.
Write down 0 as next digit of the result. 
Result so far: 119045.6
The remainder is 200 after subtracting 0 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

In conclusion, the division gives 119045.6 with a balance of 0.02.