We divide 42459938 by 523
The aim is to understand the frequency of 523 in 42459938.

Advancing to step 1:
4 divided by 523 is 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 523

Let's proceed to step 2:
The number 523 fits into 42 0 times, leaving a remainder of 42.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 42 and we're left with 42.
Append the next digit (4) from the dividend to 42 and continue with: 424 / 523

Moving on to step 3:
523 goes into 424 0 times with a remainder of 424.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 424 after subtracting 0 from 424.
Include the next digit (5) from the dividend after 424, then repeat: 4245 / 523

Going ahead to step 4:
If we divide 4245 by 523, we get 8 and a remainder of 61.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Deduct 4184 from 4245 and we're left with 61.
Bring next digit (9) of the dividend behind the 61 and repeat the process: 619 / 523

Moving on to step 5:
The number 523 fits into 619 1 times, leaving a remainder of 96.
The next digit of our result is 1. 
Result so far: 81.0
Subtracting 523 from 619 leaves us with 96.
Fetch the next digit (9) from the dividend, attach it to 96 and continue: 969 / 523

Moving on to step 6:
523 goes into 969 1 times with a remainder of 446.
Write down 1 as next digit of the result. 
Result so far: 811.0
Subtract 523 from 969 to get 446.
Fetch the next digit (3) from the dividend, attach it to 446 and continue: 4463 / 523

Going ahead to step 7:
If we divide 4463 by 523, we get 8 and a remainder of 279.
Write down 8 as next digit of the result. 
Result so far: 8118.0
If we take 4184 away from 4463, we end up with 279.
Include the next digit (8) from the dividend after 279, then repeat: 2798 / 523

Advancing to step 8:
The number 523 fits into 2798 5 times, leaving a remainder of 183.
The number 5 becomes the next digit in our result. 
Result so far: 81185.0
Subtract 2615 from 2798 to get 183.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1830, and continue the process.

On to step 9:
523 goes into 1830 3 times with a remainder of 261.
Record the quotient 3 as the next digit in the result. 
Result so far: 81185.3
If we take 1569 away from 1830, we end up with 261.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2610, and continue the process.

On to step 10:
If we divide 2610 by 523, we get 4 and a remainder of 518.
Write down 4 as next digit of the result. 
Result so far: 81185.34
If we subtract 2092 from 2610, we get 518.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5180, and continue the process.

Step 11:
5180 divided by 523 is 9 with a remainder of 473.
Write down 9 as next digit of the result. 
Result so far: 81185.349
Subtract 4707 from 5180 to get 473.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4730, and continue the process.

Advancing to step 12:
The number 523 fits into 4730 9 times, leaving a remainder of 23.
Put 9 as the next digit of the answer. 
Result so far: 81185.3499
If we subtract 4707 from 4730, we get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Our division results in 81185.3499 with a remaining 0.00023.