We look at the division of 66693430 by 883 
The aim is to understand the frequency of 883 in 66693430.

Step 1:
883 can be fit into 6 0 times, resulting in a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 883

Moving on to step 2:
If we divide 66 by 883, we get 0 and a remainder of 66.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 66 after subtracting 0 from 66.
Append the next digit (6) from the dividend to 66 and continue with: 666 / 883

Going ahead to step 3:
If we divide 666 by 883, we get 0 and a remainder of 666.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 666 to get 666.
Include the next digit (9) from the dividend after 666, then repeat: 6669 / 883

Going ahead to step 4:
The number 883 fits into 6669 7 times, leaving a remainder of 488.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
If we take 6181 away from 6669, we end up with 488.
Bring next digit (3) of the dividend behind the 488 and repeat the process: 4883 / 883

Going ahead to step 5:
The number 883 fits into 4883 5 times, leaving a remainder of 468.
Use 5 as the next digit of our solution. 
Result so far: 75.0
The remainder is 468 after subtracting 4415 from 4883.
Fetch the next digit (4) from the dividend, attach it to 468 and continue: 4684 / 883

Moving on to step 6:
4684 divided by 883 is 5 with a remainder of 269.
The number 5 becomes the next digit in our result. 
Result so far: 755.0
If we take 4415 away from 4684, we end up with 269.
Fetch the next digit (3) from the dividend, attach it to 269 and continue: 2693 / 883

Let's proceed to step 7:
883 goes into 2693 3 times with a remainder of 44.
Put 3 as the next digit of the answer. 
Result so far: 7553.0
If we subtract 2649 from 2693, we get 44.
Append the next digit (0) from the dividend to 44 and continue with: 440 / 883

Step 8:
If we divide 440 by 883, we get 0 and a remainder of 440.
Put 0 as the next digit of the answer. 
Result so far: 75530.0
Subtract 0 from 440 to get 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Advancing to step 9:
4400 divided by 883 is 4 with a remainder of 868.
Use 4 as the next digit of our solution. 
Result so far: 75530.4
The remainder is 868 after subtracting 3532 from 4400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8680, and continue the process.

Advancing to step 10:
If we divide 8680 by 883, we get 9 and a remainder of 733.
Use 9 as the next digit of our solution. 
Result so far: 75530.49
The remainder is 733 after subtracting 7947 from 8680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7330, and continue the process.

Step 11:
883 goes into 7330 8 times with a remainder of 266.
Record the quotient 8 as the next digit in the result. 
Result so far: 75530.498
If we subtract 7064 from 7330, we get 266.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2660, and continue the process.

Let's proceed to step 12:
When dividing 2660 by 883, we get 3 with a remainder of 11.
The number 3 becomes the next digit in our result. 
Result so far: 75530.4983
If we take 2649 away from 2660, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 13:
If we divide 110 by 883, we get 0 and a remainder of 110.
The number 0 becomes the next digit in our result. 
Result so far: 75530.4983
Subtract 0 from 110 to get 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Advancing to step 14:
883 can be fit into 1100 1 times, resulting in a remainder of 217.
Record the quotient 1 as the next digit in the result. 
Result so far: 75530.498301
Deduct 883 from 1100 and we're left with 217.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2170, and continue the process.

Let's proceed to step 15:
If we divide 2170 by 883, we get 2 and a remainder of 404.
Use 2 as the next digit of our solution. 
Result so far: 75530.4983012
Subtract 1766 from 2170 to get 404.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4040, and continue the process.

Step 16:
The number 883 fits into 4040 4 times, leaving a remainder of 508.
The next digit of our result is 4. 
Result so far: 75530.49830124
Deduct 3532 from 4040 and we're left with 508.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5080, and continue the process.

The final result is 75530.49830124 with a remainder of 5.08e-07.