Let's divide 43831729 by 87
The aim is to understand the frequency of 87 in 43831729.

Advancing to step 1:
If we divide 4 by 87, we get 0 and a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Include the next digit (3) from the dividend after 4, then repeat: 43 / 87

Advancing to step 2:
87 can be fit into 43 0 times, resulting in a remainder of 43.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 43, we end up with 43.
Fetch the next digit (8) from the dividend, attach it to 43 and continue: 438 / 87

Going ahead to step 3:
The number 87 fits into 438 5 times, leaving a remainder of 3.
Put 5 as the next digit of the answer. 
Result so far: 5.0
The remainder is 3 after subtracting 435 from 438.
Grab the next digit (3) from the dividend, add it to 3, then carry on: 33 / 87

Advancing to step 4:
87 goes into 33 0 times with a remainder of 33.
Use 0 as the next digit of our solution. 
Result so far: 50.0
If we take 0 away from 33, we end up with 33.
Bring next digit (1) of the dividend behind the 33 and repeat the process: 331 / 87

Advancing to step 5:
The number 87 fits into 331 3 times, leaving a remainder of 70.
Use 3 as the next digit of our solution. 
Result so far: 503.0
Subtract 261 from 331 to get 70.
Include the next digit (7) from the dividend after 70, then repeat: 707 / 87

Moving on to step 6:
707 divided by 87 is 8 with a remainder of 11.
The next digit of our result is 8. 
Result so far: 5038.0
Deduct 696 from 707 and we're left with 11.
Append the next digit (2) from the dividend to 11 and continue with: 112 / 87

On to step 7:
87 can be fit into 112 1 times, resulting in a remainder of 25.
Record the quotient 1 as the next digit in the result. 
Result so far: 50381.0
The remainder is 25 after subtracting 87 from 112.
Fetch the next digit (9) from the dividend, attach it to 25 and continue: 259 / 87

Step 8:
259 divided by 87 is 2 with a remainder of 85.
Write down 2 as next digit of the result. 
Result so far: 503812.0
Deduct 174 from 259 and we're left with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

On to step 9:
87 goes into 850 9 times with a remainder of 67.
The next digit of our result is 9. 
Result so far: 503812.9
If we take 783 away from 850, we end up with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Step 10:
87 goes into 670 7 times with a remainder of 61.
Record the quotient 7 as the next digit in the result. 
Result so far: 503812.97
Subtract 609 from 670 to get 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Let's proceed to step 11:
If we divide 610 by 87, we get 7 and a remainder of 1.
Write down 7 as next digit of the result. 
Result so far: 503812.977
If we take 609 away from 610, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

After the division, we end up with 503812.977 and a remainder of 0.0001.