64181587 ÷ 423 
The aim is to understand the frequency of 423 in 64181587.

Going ahead to step 1:
423 goes into 6 0 times with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 423

Let's proceed to step 2:
64 divided by 423 is 0 with a remainder of 64.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 64 after subtracting 0 from 64.
Bring next digit (1) of the dividend behind the 64 and repeat the process: 641 / 423

Step 3:
423 goes into 641 1 times with a remainder of 218.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 218 after subtracting 423 from 641.
Grab the next digit (8) from the dividend, add it to 218, then carry on: 2188 / 423

Advancing to step 4:
2188 divided by 423 is 5 with a remainder of 73.
Use 5 as the next digit of our solution. 
Result so far: 15.0
If we take 2115 away from 2188, we end up with 73.
Include the next digit (1) from the dividend after 73, then repeat: 731 / 423

Advancing to step 5:
When dividing 731 by 423, we get 1 with a remainder of 308.
Put 1 as the next digit of the answer. 
Result so far: 151.0
Subtract 423 from 731 to get 308.
Fetch the next digit (5) from the dividend, attach it to 308 and continue: 3085 / 423

Moving on to step 6:
If we divide 3085 by 423, we get 7 and a remainder of 124.
Put 7 as the next digit of the answer. 
Result so far: 1517.0
Subtract 2961 from 3085 to get 124.
Include the next digit (8) from the dividend after 124, then repeat: 1248 / 423

Going ahead to step 7:
The number 423 fits into 1248 2 times, leaving a remainder of 402.
Record the quotient 2 as the next digit in the result. 
Result so far: 15172.0
The remainder is 402 after subtracting 846 from 1248.
Append the next digit (7) from the dividend to 402 and continue with: 4027 / 423

Moving on to step 8:
The number 423 fits into 4027 9 times, leaving a remainder of 220.
The number 9 becomes the next digit in our result. 
Result so far: 151729.0
Subtracting 3807 from 4027 leaves us with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Step 9:
The number 423 fits into 2200 5 times, leaving a remainder of 85.
The number 5 becomes the next digit in our result. 
Result so far: 151729.5
If we subtract 2115 from 2200, we get 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Moving on to step 10:
423 can be fit into 850 2 times, resulting in a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 151729.52
Deduct 846 from 850 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 11:
423 goes into 40 0 times with a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 151729.52
Subtracting 0 from 40 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 12:
When dividing 400 by 423, we get 0 with a remainder of 400.
The next digit of our result is 0. 
Result so far: 151729.52
Subtracting 0 from 400 leaves us with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

After the division, we end up with 151729.52 and a remainder of 0.004.