We look at the division of 43392624 by 531 
The aim is to understand the frequency of 531 in 43392624.

Going ahead to step 1:
When dividing 4 by 531, we get 0 with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Append the next digit (3) from the dividend to 4 and continue with: 43 / 531

Let's proceed to step 2:
531 can be fit into 43 0 times, resulting in a remainder of 43.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 43 after subtracting 0 from 43.
Include the next digit (3) from the dividend after 43, then repeat: 433 / 531

Going ahead to step 3:
The number 531 fits into 433 0 times, leaving a remainder of 433.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 433 and we're left with 433.
Append the next digit (9) from the dividend to 433 and continue with: 4339 / 531

Advancing to step 4:
4339 divided by 531 is 8 with a remainder of 91.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Subtracting 4248 from 4339 leaves us with 91.
Take the next digit (2) from the dividend and append it to 91, then repeat: 912 / 531

Moving on to step 5:
If we divide 912 by 531, we get 1 and a remainder of 381.
Record the quotient 1 as the next digit in the result. 
Result so far: 81.0
The remainder is 381 after subtracting 531 from 912.
Fetch the next digit (6) from the dividend, attach it to 381 and continue: 3816 / 531

Step 6:
531 goes into 3816 7 times with a remainder of 99.
Use 7 as the next digit of our solution. 
Result so far: 817.0
Subtracting 3717 from 3816 leaves us with 99.
Append the next digit (2) from the dividend to 99 and continue with: 992 / 531

Advancing to step 7:
When dividing 992 by 531, we get 1 with a remainder of 461.
Use 1 as the next digit of our solution. 
Result so far: 8171.0
The remainder is 461 after subtracting 531 from 992.
Take the next digit (4) from the dividend and append it to 461, then repeat: 4614 / 531

Let's proceed to step 8:
531 can be fit into 4614 8 times, resulting in a remainder of 366.
The next digit of our result is 8. 
Result so far: 81718.0
Deduct 4248 from 4614 and we're left with 366.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3660, and continue the process.

Moving on to step 9:
531 can be fit into 3660 6 times, resulting in a remainder of 474.
The next digit of our result is 6. 
Result so far: 81718.6
If we subtract 3186 from 3660, we get 474.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4740, and continue the process.

Moving on to step 10:
531 can be fit into 4740 8 times, resulting in a remainder of 492.
The next digit of our result is 8. 
Result so far: 81718.68
If we take 4248 away from 4740, we end up with 492.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4920, and continue the process.

Let's proceed to step 11:
When dividing 4920 by 531, we get 9 with a remainder of 141.
Put 9 as the next digit of the answer. 
Result so far: 81718.689
If we take 4779 away from 4920, we end up with 141.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1410, and continue the process.

On to step 12:
When dividing 1410 by 531, we get 2 with a remainder of 348.
Record the quotient 2 as the next digit in the result. 
Result so far: 81718.6892
Subtracting 1062 from 1410 leaves us with 348.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3480, and continue the process.

Going ahead to step 13:
The number 531 fits into 3480 6 times, leaving a remainder of 294.
Record the quotient 6 as the next digit in the result. 
Result so far: 81718.68926
Subtract 3186 from 3480 to get 294.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2940, and continue the process.

Step 14:
2940 divided by 531 is 5 with a remainder of 285.
Write down 5 as next digit of the result. 
Result so far: 81718.689265
Subtract 2655 from 2940 to get 285.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2850, and continue the process.

Moving on to step 15:
531 can be fit into 2850 5 times, resulting in a remainder of 195.
Write down 5 as next digit of the result. 
Result so far: 81718.6892655
Deduct 2655 from 2850 and we're left with 195.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

After the division, we end up with 81718.6892655 and a remainder of 1.95e-06.