87384671 ÷ 331 
The aim is to understand the frequency of 331 in 87384671.

Going ahead to step 1:
If we divide 8 by 331, we get 0 and a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (7) from the dividend after 8, then repeat: 87 / 331

Let's proceed to step 2:
331 goes into 87 0 times with a remainder of 87.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 87 and we're left with 87.
Include the next digit (3) from the dividend after 87, then repeat: 873 / 331

Advancing to step 3:
The number 331 fits into 873 2 times, leaving a remainder of 211.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtracting 662 from 873 leaves us with 211.
Fetch the next digit (8) from the dividend, attach it to 211 and continue: 2118 / 331

On to step 4:
2118 divided by 331 is 6 with a remainder of 132.
The next digit of our result is 6. 
Result so far: 26.0
Deduct 1986 from 2118 and we're left with 132.
Fetch the next digit (4) from the dividend, attach it to 132 and continue: 1324 / 331

Moving on to step 5:
When dividing 1324 by 331, we get 4 with a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 264.0
If we subtract 1324 from 1324, we get 0.
Grab the next digit (6) from the dividend, add it to 0, then carry on: 6 / 331

Going ahead to step 6:
6 divided by 331 is 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 2640.0
If we take 0 away from 6, we end up with 6.
Take the next digit (7) from the dividend and append it to 6, then repeat: 67 / 331

Moving on to step 7:
If we divide 67 by 331, we get 0 and a remainder of 67.
The next digit of our result is 0. 
Result so far: 26400.0
If we take 0 away from 67, we end up with 67.
Include the next digit (1) from the dividend after 67, then repeat: 671 / 331

Advancing to step 8:
If we divide 671 by 331, we get 2 and a remainder of 9.
Write down 2 as next digit of the result. 
Result so far: 264002.0
If we subtract 662 from 671, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 9:
331 goes into 90 0 times with a remainder of 90.
Record the quotient 0 as the next digit in the result. 
Result so far: 264002.0
Deduct 0 from 90 and we're left with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Step 10:
The number 331 fits into 900 2 times, leaving a remainder of 238.
Record the quotient 2 as the next digit in the result. 
Result so far: 264002.02
If we subtract 662 from 900, we get 238.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

Moving on to step 11:
2380 divided by 331 is 7 with a remainder of 63.
Write down 7 as next digit of the result. 
Result so far: 264002.027
Subtract 2317 from 2380 to get 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Going ahead to step 12:
When dividing 630 by 331, we get 1 with a remainder of 299.
Put 1 as the next digit of the answer. 
Result so far: 264002.0271
The remainder is 299 after subtracting 331 from 630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2990, and continue the process.

Advancing to step 13:
If we divide 2990 by 331, we get 9 and a remainder of 11.
Write down 9 as next digit of the result. 
Result so far: 264002.02719
Subtracting 2979 from 2990 leaves us with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 14:
The number 331 fits into 110 0 times, leaving a remainder of 110.
Record the quotient 0 as the next digit in the result. 
Result so far: 264002.02719
Subtract 0 from 110 to get 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Moving on to step 15:
331 can be fit into 1100 3 times, resulting in a remainder of 107.
Put 3 as the next digit of the answer. 
Result so far: 264002.0271903
Subtracting 993 from 1100 leaves us with 107.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1070, and continue the process.

On to step 16:
331 can be fit into 1070 3 times, resulting in a remainder of 77.
The next digit of our result is 3. 
Result so far: 264002.02719033
If we subtract 993 from 1070, we get 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

In conclusion, the division gives 264002.02719033 with a balance of 7.7e-08.