We're dividing 3986469 by 87 
The aim is to understand the frequency of 87 in 3986469.

Step 1:
If we divide 3 by 87, we get 0 and a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 87

Moving on to step 2:
87 goes into 39 0 times with a remainder of 39.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 39, we get 39.
Grab the next digit (8) from the dividend, add it to 39, then carry on: 398 / 87

Moving on to step 3:
398 divided by 87 is 4 with a remainder of 50.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Deduct 348 from 398 and we're left with 50.
Fetch the next digit (6) from the dividend, attach it to 50 and continue: 506 / 87

Step 4:
The number 87 fits into 506 5 times, leaving a remainder of 71.
Write down 5 as next digit of the result. 
Result so far: 45.0
Deduct 435 from 506 and we're left with 71.
Grab the next digit (4) from the dividend, add it to 71, then carry on: 714 / 87

On to step 5:
87 can be fit into 714 8 times, resulting in a remainder of 18.
Put 8 as the next digit of the answer. 
Result so far: 458.0
The remainder is 18 after subtracting 696 from 714.
Grab the next digit (6) from the dividend, add it to 18, then carry on: 186 / 87

Going ahead to step 6:
The number 87 fits into 186 2 times, leaving a remainder of 12.
Put 2 as the next digit of the answer. 
Result so far: 4582.0
Subtracting 174 from 186 leaves us with 12.
Append the next digit (9) from the dividend to 12 and continue with: 129 / 87

Let's proceed to step 7:
If we divide 129 by 87, we get 1 and a remainder of 42.
Record the quotient 1 as the next digit in the result. 
Result so far: 45821.0
The remainder is 42 after subtracting 87 from 129.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Going ahead to step 8:
If we divide 420 by 87, we get 4 and a remainder of 72.
The next digit of our result is 4. 
Result so far: 45821.4
Subtracting 348 from 420 leaves us with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Step 9:
If we divide 720 by 87, we get 8 and a remainder of 24.
The number 8 becomes the next digit in our result. 
Result so far: 45821.48
If we subtract 696 from 720, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 10:
The number 87 fits into 240 2 times, leaving a remainder of 66.
The next digit of our result is 2. 
Result so far: 45821.482
The remainder is 66 after subtracting 174 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Going ahead to step 11:
87 can be fit into 660 7 times, resulting in a remainder of 51.
Write down 7 as next digit of the result. 
Result so far: 45821.4827
Subtract 609 from 660 to get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Moving on to step 12:
510 divided by 87 is 5 with a remainder of 75.
Put 5 as the next digit of the answer. 
Result so far: 45821.48275
If we subtract 435 from 510, we get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Let's proceed to step 13:
750 divided by 87 is 8 with a remainder of 54.
Use 8 as the next digit of our solution. 
Result so far: 45821.482758
Subtracting 696 from 750 leaves us with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

On to step 14:
The number 87 fits into 540 6 times, leaving a remainder of 18.
Put 6 as the next digit of the answer. 
Result so far: 45821.4827586
Subtract 522 from 540 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 15:
180 divided by 87 is 2 with a remainder of 6.
The number 2 becomes the next digit in our result. 
Result so far: 45821.48275862
If we take 174 away from 180, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

After the division, we end up with 45821.48275862 and a remainder of 6e-09.