We look at the division of 624769 by 87 
The aim is to understand the frequency of 87 in 624769.

Step 1:
6 divided by 87 is 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Take the next digit (2) from the dividend and append it to 6, then repeat: 62 / 87

Let's proceed to step 2:
62 divided by 87 is 0 with a remainder of 62.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 62 leaves us with 62.
Bring next digit (4) of the dividend behind the 62 and repeat the process: 624 / 87

On to step 3:
If we divide 624 by 87, we get 7 and a remainder of 15.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Subtracting 609 from 624 leaves us with 15.
Bring next digit (7) of the dividend behind the 15 and repeat the process: 157 / 87

Moving on to step 4:
The number 87 fits into 157 1 times, leaving a remainder of 70.
Use 1 as the next digit of our solution. 
Result so far: 71.0
Deduct 87 from 157 and we're left with 70.
Include the next digit (6) from the dividend after 70, then repeat: 706 / 87

Moving on to step 5:
706 divided by 87 is 8 with a remainder of 10.
Record the quotient 8 as the next digit in the result. 
Result so far: 718.0
If we subtract 696 from 706, we get 10.
Append the next digit (9) from the dividend to 10 and continue with: 109 / 87

Let's proceed to step 6:
109 divided by 87 is 1 with a remainder of 22.
Put 1 as the next digit of the answer. 
Result so far: 7181.0
If we take 87 away from 109, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Step 7:
If we divide 220 by 87, we get 2 and a remainder of 46.
Use 2 as the next digit of our solution. 
Result so far: 7181.2
The remainder is 46 after subtracting 174 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Let's proceed to step 8:
460 divided by 87 is 5 with a remainder of 25.
The next digit of our result is 5. 
Result so far: 7181.25
Subtracting 435 from 460 leaves us with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 9:
87 can be fit into 250 2 times, resulting in a remainder of 76.
Write down 2 as next digit of the result. 
Result so far: 7181.252
If we subtract 174 from 250, we get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Step 10:
87 can be fit into 760 8 times, resulting in a remainder of 64.
The next digit of our result is 8. 
Result so far: 7181.2528
Subtracting 696 from 760 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Going ahead to step 11:
When dividing 640 by 87, we get 7 with a remainder of 31.
Record the quotient 7 as the next digit in the result. 
Result so far: 7181.25287
Subtract 609 from 640 to get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Advancing to step 12:
310 divided by 87 is 3 with a remainder of 49.
The number 3 becomes the next digit in our result. 
Result so far: 7181.252873
If we take 261 away from 310, we end up with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Step 13:
87 can be fit into 490 5 times, resulting in a remainder of 55.
Use 5 as the next digit of our solution. 
Result so far: 7181.2528735
Subtract 435 from 490 to get 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Going ahead to step 14:
When dividing 550 by 87, we get 6 with a remainder of 28.
The next digit of our result is 6. 
Result so far: 7181.25287356
Subtracting 522 from 550 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

The final outcome is 7181.25287356, with a leftover of 2.8e-08.