We look at the division of 42507783 by 723 
The aim is to understand the frequency of 723 in 42507783.

Advancing to step 1:
4 divided by 723 is 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 723

On to step 2:
When dividing 42 by 723, we get 0 with a remainder of 42.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 42, we end up with 42.
Include the next digit (5) from the dividend after 42, then repeat: 425 / 723

On to step 3:
When dividing 425 by 723, we get 0 with a remainder of 425.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 425, we get 425.
Grab the next digit (0) from the dividend, add it to 425, then carry on: 4250 / 723

Step 4:
When dividing 4250 by 723, we get 5 with a remainder of 635.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
If we subtract 3615 from 4250, we get 635.
Fetch the next digit (7) from the dividend, attach it to 635 and continue: 6357 / 723

On to step 5:
723 goes into 6357 8 times with a remainder of 573.
The number 8 becomes the next digit in our result. 
Result so far: 58.0
If we subtract 5784 from 6357, we get 573.
Fetch the next digit (7) from the dividend, attach it to 573 and continue: 5737 / 723

Moving on to step 6:
5737 divided by 723 is 7 with a remainder of 676.
Write down 7 as next digit of the result. 
Result so far: 587.0
If we take 5061 away from 5737, we end up with 676.
Bring next digit (8) of the dividend behind the 676 and repeat the process: 6768 / 723

Advancing to step 7:
723 can be fit into 6768 9 times, resulting in a remainder of 261.
Put 9 as the next digit of the answer. 
Result so far: 5879.0
If we take 6507 away from 6768, we end up with 261.
Append the next digit (3) from the dividend to 261 and continue with: 2613 / 723

Step 8:
723 can be fit into 2613 3 times, resulting in a remainder of 444.
Use 3 as the next digit of our solution. 
Result so far: 58793.0
Subtracting 2169 from 2613 leaves us with 444.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4440, and continue the process.

Let's proceed to step 9:
723 goes into 4440 6 times with a remainder of 102.
Put 6 as the next digit of the answer. 
Result so far: 58793.6
If we subtract 4338 from 4440, we get 102.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

Advancing to step 10:
723 can be fit into 1020 1 times, resulting in a remainder of 297.
The number 1 becomes the next digit in our result. 
Result so far: 58793.61
The remainder is 297 after subtracting 723 from 1020.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2970, and continue the process.

Going ahead to step 11:
When dividing 2970 by 723, we get 4 with a remainder of 78.
Put 4 as the next digit of the answer. 
Result so far: 58793.614
If we take 2892 away from 2970, we end up with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Going ahead to step 12:
780 divided by 723 is 1 with a remainder of 57.
Write down 1 as next digit of the result. 
Result so far: 58793.6141
If we take 723 away from 780, we end up with 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 13:
723 can be fit into 570 0 times, resulting in a remainder of 570.
Write down 0 as next digit of the result. 
Result so far: 58793.6141
Subtract 0 from 570 to get 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5700, and continue the process.

Step 14:
723 can be fit into 5700 7 times, resulting in a remainder of 639.
Record the quotient 7 as the next digit in the result. 
Result so far: 58793.614107
Subtract 5061 from 5700 to get 639.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6390, and continue the process.

On to step 15:
When dividing 6390 by 723, we get 8 with a remainder of 606.
Write down 8 as next digit of the result. 
Result so far: 58793.6141078
Deduct 5784 from 6390 and we're left with 606.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6060, and continue the process.

Moving on to step 16:
When dividing 6060 by 723, we get 8 with a remainder of 276.
Write down 8 as next digit of the result. 
Result so far: 58793.61410788
Subtract 5784 from 6060 to get 276.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2760, and continue the process.

The final outcome is 58793.61410788, with a leftover of 2.76e-07.