306380 ÷ 87 
The aim is to understand the frequency of 87 in 306380.

Let's proceed to step 1:
When dividing 3 by 87, we get 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Append the next digit (0) from the dividend to 3 and continue with: 30 / 87

Moving on to step 2:
The number 87 fits into 30 0 times, leaving a remainder of 30.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 30 and we're left with 30.
Include the next digit (6) from the dividend after 30, then repeat: 306 / 87

Advancing to step 3:
306 divided by 87 is 3 with a remainder of 45.
The next digit of our result is 3. 
Result so far: 3.0
Deduct 261 from 306 and we're left with 45.
Fetch the next digit (3) from the dividend, attach it to 45 and continue: 453 / 87

Step 4:
453 divided by 87 is 5 with a remainder of 18.
Record the quotient 5 as the next digit in the result. 
Result so far: 35.0
Deduct 435 from 453 and we're left with 18.
Fetch the next digit (8) from the dividend, attach it to 18 and continue: 188 / 87

On to step 5:
188 divided by 87 is 2 with a remainder of 14.
Put 2 as the next digit of the answer. 
Result so far: 352.0
The remainder is 14 after subtracting 174 from 188.
Append the next digit (0) from the dividend to 14 and continue with: 140 / 87

Advancing to step 6:
140 divided by 87 is 1 with a remainder of 53.
The number 1 becomes the next digit in our result. 
Result so far: 3521.0
Deduct 87 from 140 and we're left with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Let's proceed to step 7:
The number 87 fits into 530 6 times, leaving a remainder of 8.
Write down 6 as next digit of the result. 
Result so far: 3521.6
Subtract 522 from 530 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 8:
If we divide 80 by 87, we get 0 and a remainder of 80.
The number 0 becomes the next digit in our result. 
Result so far: 3521.6
Subtract 0 from 80 to get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Moving on to step 9:
The number 87 fits into 800 9 times, leaving a remainder of 17.
Record the quotient 9 as the next digit in the result. 
Result so far: 3521.609
Deduct 783 from 800 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 10:
If we divide 170 by 87, we get 1 and a remainder of 83.
Use 1 as the next digit of our solution. 
Result so far: 3521.6091
If we subtract 87 from 170, we get 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Step 11:
The number 87 fits into 830 9 times, leaving a remainder of 47.
Use 9 as the next digit of our solution. 
Result so far: 3521.60919
If we subtract 783 from 830, we get 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Let's proceed to step 12:
87 can be fit into 470 5 times, resulting in a remainder of 35.
The next digit of our result is 5. 
Result so far: 3521.609195
Subtracting 435 from 470 leaves us with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Advancing to step 13:
87 can be fit into 350 4 times, resulting in a remainder of 2.
Put 4 as the next digit of the answer. 
Result so far: 3521.6091954
If we take 348 away from 350, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 14:
The number 87 fits into 20 0 times, leaving a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 3521.6091954
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

After the division, we end up with 3521.6091954 and a remainder of 2e-08.